1213457101 has 12 divisors (see below), whose sum is σ = 1240938720. Its totient is φ = 1186568240.

The previous prime is 1213457081. The next prime is 1213457107. The reversal of 1213457101 is 1017543121.

It is not a de Polignac number, because 1213457101 - 2⁷ = 1213456973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213457107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1176456 + ... + 1177486.

It is an arithmetic number, because the mean of its divisors is an integer number (103411560).

Almost surely, 2^1213457101 is an apocalyptic number.

It is an amenable number.

1213457101 is a deficient number, since it is larger than the sum of its proper divisors (27481619).

1213457101 is an equidigital number, since it uses as much as digits as its factorization.

1213457101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1213457101 is about 34834.7111513789. The cubic root of 1213457101 is about 1066.6161187743.

The spelling of 1213457101 in words is "one billion, two hundred thirteen million, four hundred fifty-seven thousand, one hundred one".