1212113001 has 32 divisors (see below), whose sum is σ = 1785079296. Its totient is φ = 725504000.

The previous prime is 1212112991. The next prime is 1212113047. The reversal of 1212113001 is 1003112121.

It is a cyclic number.

It is not a de Polignac number, because 1212113001 - 2⁵ = 1212112969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212113801) 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, 1110466 + ... + 1111556.

It is an arithmetic number, because the mean of its divisors is an integer number (55783728).

Almost surely, 2^1212113001 is an apocalyptic number.

1212113001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212113001 is a deficient number, since it is larger than the sum of its proper divisors (572966295).

1212113001 is a wasteful number, since it uses less digits than its factorization.

1212113001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1212113001 is about 34815.4132676894. The cubic root of 1212113001 is about 1066.2221566587. Note that the first 3 decimals are identical.

Adding to 1212113001 its reverse (1003112121), we get a palindrome (2215225122).

The spelling of 1212113001 in words is "one billion, two hundred twelve million, one hundred thirteen thousand, one".