22211212202120 has 32 divisors (see below), whose sum is σ = 50199331633920. Its totient is φ = 8844644137920.

The previous prime is 22211212202099. The next prime is 22211212202129. The reversal of 22211212202120 is 2120221211222.

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 = 22211212202092 and 22211212202101.

It is not an unprimeable number, because it can be changed into a prime (22211212202129) 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, 1245014186 + ... + 1245032025.

It is an arithmetic number, because the mean of its divisors is an integer number (1568729113560).

Almost surely, 2^{22211212202120} is an apocalyptic number.

22211212202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211212202120 is an abundant number, since it is smaller than the sum of its proper divisors (27988119431800).

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

22211212202120 is a wasteful number, since it uses less digits than its factorization.

22211212202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490046445 (or 2490046441 counting only the distinct ones).

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

Adding to 22211212202120 its reverse (2120221211222), we get a palindrome (24331433413342).

The spelling of 22211212202120 in words is "twenty-two trillion, two hundred eleven billion, two hundred twelve million, two hundred two thousand, one hundred twenty".