10122211220 has 96 divisors (see below), whose sum is σ = 24235497216. Its totient is φ = 3515212800.

The previous prime is 10122211199. The next prime is 10122211237. The reversal of 10122211220 is 2211222101.

It is a junction number, because it is equal to n+sod(n) for n = 10122211195 and 10122211204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4436480 + ... + 4438760.

It is an arithmetic number, because the mean of its divisors is an integer number (252453096).

Almost surely, 2^10122211220 is an apocalyptic number.

10122211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10122211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12117748608).

10122211220 is an abundant number, since it is smaller than the sum of its proper divisors (14113285996).

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

10122211220 is a wasteful number, since it uses less digits than its factorization.

10122211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201 (or 3199 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10122211220 its reverse (2211222101), we get a palindrome (12333433321).

The spelling of 10122211220 in words is "ten billion, one hundred twenty-two million, two hundred eleven thousand, two hundred twenty".