1211230023212 has 12 divisors (see below), whose sum is σ = 2312348226216. Its totient is φ = 550559101440.

The previous prime is 1211230023209. The next prime is 1211230023221. The reversal of 1211230023212 is 2123200321121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13763977493 + ... + 13763977580.

It is an arithmetic number, because the mean of its divisors is an integer number (192695685518).

Almost surely, 2^{1211230023212} is an apocalyptic number.

It is an amenable number.

1211230023212 is a deficient number, since it is larger than the sum of its proper divisors (1101118203004).

1211230023212 is a wasteful number, since it uses less digits than its factorization.

1211230023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27527955088 (or 27527955086 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1211230023212 its reverse (2123200321121), we get a palindrome (3334430344333).

The spelling of 1211230023212 in words is "one trillion, two hundred eleven billion, two hundred thirty million, twenty-three thousand, two hundred twelve".