222202011211220 has 24 divisors (see below), whose sum is σ = 466673544755208. Its totient is φ = 88871409968000.

The previous prime is 222202011211207. The next prime is 222202011211223. The reversal of 222202011211220 is 22112110202222.

It can be written as a sum of positive squares in 4 ways, for example, as 60376847224516 + 161825163986704 = 7770254^2 + 12721052^2 .

It is a super-2 number, since 2×222202011211220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 222202011211192 and 222202011211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222202011211223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586963331 + ... + 587341770.

It is an arithmetic number, because the mean of its divisors is an integer number (19444731031467).

Almost surely, 2^{222202011211220} is an apocalyptic number.

222202011211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222202011211220 is an abundant number, since it is smaller than the sum of its proper divisors (244471533543988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222202011211220 is a wasteful number, since it uses less digits than its factorization.

222202011211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174314571 (or 1174314569 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222202011211220 its reverse (22112110202222), we get a palindrome (244314121413442).

The spelling of 222202011211220 in words is "two hundred twenty-two trillion, two hundred two billion, eleven million, two hundred eleven thousand, two hundred twenty".