1213214051 has 16 divisors (see below), whose sum is σ = 1450980864. Its totient is φ = 991820544.

The previous prime is 1213214033. The next prime is 1213214069. The reversal of 1213214051 is 1504123121.

It is an interprime number because it is at equal distance from previous prime (1213214033) and next prime (1213214069).

It is a cyclic number.

It is not a de Polignac number, because 1213214051 - 2⁶ = 1213213987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213214021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46160 + ... + 67506.

It is an arithmetic number, because the mean of its divisors is an integer number (90686304).

Almost surely, 2^1213214051 is an apocalyptic number.

1213214051 is a deficient number, since it is larger than the sum of its proper divisors (237766813).

1213214051 is a wasteful number, since it uses less digits than its factorization.

1213214051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21730.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1213214051 is about 34831.2223586827. Note that the first 3 decimals coincide. The cubic root of 1213214051 is about 1066.5449012154.

Adding to 1213214051 its reverse (1504123121), we get a palindrome (2717337172).

The spelling of 1213214051 in words is "one billion, two hundred thirteen million, two hundred fourteen thousand, fifty-one".