1121231123212 has 24 divisors (see below), whose sum is σ = 2009317665600. Its totient is φ = 547299831936.

The previous prime is 1121231123209. The next prime is 1121231123231. The reversal of 1121231123212 is 2123211321211.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19905583 + ... + 19961830.

It is an arithmetic number, because the mean of its divisors is an integer number (83721569400).

Almost surely, 2^{1121231123212} is an apocalyptic number.

It is an amenable number.

1121231123212 is a deficient number, since it is larger than the sum of its proper divisors (888086542388).

1121231123212 is a wasteful number, since it uses less digits than its factorization.

1121231123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39867585 (or 39867583 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 1121231123212 its reverse (2123211321211), we get a palindrome (3244442444423).

The spelling of 1121231123212 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-one million, one hundred twenty-three thousand, two hundred twelve".