1211121200022 has 64 divisors (see below), whose sum is σ = 2537128488384. Its totient is φ = 385036899840.

The previous prime is 1211121200011. The next prime is 1211121200089. The reversal of 1211121200022 is 2200021211121.

It is a super-2 number, since 2×1211121200022² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211121199974 and 1211121200010.

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, 3815188 + ... + 4120424.

It is an arithmetic number, because the mean of its divisors is an integer number (39642632631).

Almost surely, 2^{1211121200022} is an apocalyptic number.

1211121200022 is an abundant number, since it is smaller than the sum of its proper divisors (1326007288362).

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

1211121200022 is a wasteful number, since it uses less digits than its factorization.

1211121200022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305633.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1211121200022 its reverse (2200021211121), we get a palindrome (3411142411143).

The spelling of 1211121200022 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, two hundred thousand, twenty-two".