1211012342122 has 32 divisors (see below), whose sum is σ = 2084176894464. Its totient is φ = 522652353600.

The previous prime is 1211012342119. The next prime is 1211012342147. The reversal of 1211012342122 is 2212432101121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1211012342093 and 1211012342102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16715533 + ... + 16787824.

It is an arithmetic number, because the mean of its divisors is an integer number (65130527952).

Almost surely, 2^{1211012342122} is an apocalyptic number.

1211012342122 is a deficient number, since it is larger than the sum of its proper divisors (873164552342).

1211012342122 is a wasteful number, since it uses less digits than its factorization.

1211012342122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33503454.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1211012342122 its reverse (2212432101121), we get a palindrome (3423444443243).

The spelling of 1211012342122 in words is "one trillion, two hundred eleven billion, twelve million, three hundred forty-two thousand, one hundred twenty-two".