1211122210120 has 32 divisors (see below), whose sum is σ = 2750492505600. Its totient is φ = 479921322688.

The previous prime is 1211122210117. The next prime is 1211122210127. The reversal of 1211122210120 is 210122211121.

It is a junction number, because it is equal to n+sod(n) for n = 1211122210094 and 1211122210103.

It is not an unprimeable number, because it can be changed into a prime (1211122210127) 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, 141481960 + ... + 141490519.

It is an arithmetic number, because the mean of its divisors is an integer number (85952890800).

Almost surely, 2^{1211122210120} is an apocalyptic number.

1211122210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211122210120 is an abundant number, since it is smaller than the sum of its proper divisors (1539370295480).

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

1211122210120 is a wasteful number, since it uses less digits than its factorization.

1211122210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282972597 (or 282972593 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211122210120 its reverse (210122211121), we get a palindrome (1421244421241).

The spelling of 1211122210120 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty".