1231211212022 has 32 divisors (see below), whose sum is σ = 2042455819680. Its totient is φ = 551935192320.

The previous prime is 1231211211983. The next prime is 1231211212051. The reversal of 1231211212022 is 2202121121321.

It is a junction number, because it is equal to n+sod(n) for n = 1231211211985 and 1231211212003.

It is a congruent number.

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, 41787848 + ... + 41817300.

It is an arithmetic number, because the mean of its divisors is an integer number (63826744365).

Almost surely, 2^{1231211212022} is an apocalyptic number.

1231211212022 is a deficient number, since it is larger than the sum of its proper divisors (811244607658).

1231211212022 is a wasteful number, since it uses less digits than its factorization.

1231211212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55568.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1231211212022 its reverse (2202121121321), we get a palindrome (3433332333343).

The spelling of 1231211212022 in words is "one trillion, two hundred thirty-one billion, two hundred eleven million, two hundred twelve thousand, twenty-two".