222120221020220 has 24 divisors (see below), whose sum is σ = 466458746997600. Its totient is φ = 88846891673792.

The previous prime is 222120221020213. The next prime is 222120221020283. The reversal of 222120221020220 is 22020122021222.

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 = 222120221020192 and 222120221020201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73273175 + ... + 76244334.

It is an arithmetic number, because the mean of its divisors is an integer number (19435781124900).

Almost surely, 2^{222120221020220} is an apocalyptic number.

222120221020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120221020220 is an abundant number, since it is smaller than the sum of its proper divisors (244338525977380).

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

222120221020220 is a wasteful number, since it uses less digits than its factorization.

222120221020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149591797 (or 149591795 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222120221020220 its reverse (22020122021222), we get a palindrome (244140343041442).

The spelling of 222120221020220 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, twenty thousand, two hundred twenty".