1212092157 has 32 divisors (see below), whose sum is σ = 1760624640. Its totient is φ = 739474560.

The previous prime is 1212092131. The next prime is 1212092171. The reversal of 1212092157 is 7512902121.

It is not a de Polignac number, because 1212092157 - 2⁷ = 1212092029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212092107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187188 + ... + 193554.

It is an arithmetic number, because the mean of its divisors is an integer number (55019520).

Almost surely, 2^1212092157 is an apocalyptic number.

It is an amenable number.

1212092157 is a deficient number, since it is larger than the sum of its proper divisors (548532483).

1212092157 is a wasteful number, since it uses less digits than its factorization.

1212092157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6513.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1212092157 is about 34815.1139162290. The cubic root of 1212092157 is about 1066.2160448903.

Adding to 1212092157 its reverse (7512902121), we get a palindrome (8724994278).

The spelling of 1212092157 in words is "one billion, two hundred twelve million, ninety-two thousand, one hundred fifty-seven".