1213052051 has 8 divisors (see below), whose sum is σ = 1289741904. Its totient is φ = 1136954880.

The previous prime is 1213052047. The next prime is 1213052053. The reversal of 1213052051 is 1502503121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213052051 - 2² = 1213052047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213052053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143945 + ... + 152138.

It is an arithmetic number, because the mean of its divisors is an integer number (161217738).

Almost surely, 2^1213052051 is an apocalyptic number.

1213052051 is a deficient number, since it is larger than the sum of its proper divisors (76689853).

1213052051 is a wasteful number, since it uses less digits than its factorization.

1213052051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296341.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1213052051 is about 34828.8967812648. The cubic root of 1213052051 is about 1066.4974273271.

Adding to 1213052051 its reverse (1502503121), we get a palindrome (2715555172).

The spelling of 1213052051 in words is "one billion, two hundred thirteen million, fifty-two thousand, fifty-one".