1013212451 has 4 divisors (see below), whose sum is σ = 1013615304. Its totient is φ = 1012809600.

The previous prime is 1013212429. The next prime is 1013212481. The reversal of 1013212451 is 1542123101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1542123101 = 137 ⋅11256373.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013212451 is a prime.

It is a super-2 number, since 2×1013212451² = 2053198941722854802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013212481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197630 + ... + 202691.

It is an arithmetic number, because the mean of its divisors is an integer number (253403826).

Almost surely, 2^1013212451 is an apocalyptic number.

1013212451 is a deficient number, since it is larger than the sum of its proper divisors (402853).

1013212451 is an equidigital number, since it uses as much as digits as its factorization.

1013212451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402852.

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

The square root of 1013212451 is about 31830.9982721246. The cubic root of 1013212451 is about 1004.3848949266.

Adding to 1013212451 its reverse (1542123101), we get a palindrome (2555335552).

The spelling of 1013212451 in words is "one billion, thirteen million, two hundred twelve thousand, four hundred fifty-one".