113212550001 has 4 divisors (see below), whose sum is σ = 150950066672. Its totient is φ = 75475033332.

The previous prime is 113212549981. The next prime is 113212550021. The reversal of 113212550001 is 100055212311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100055212311 = 3 ⋅33351737437.

It is an interprime number because it is at equal distance from previous prime (113212549981) and next prime (113212550021).

It is not a de Polignac number, because 113212550001 - 2⁵ = 113212549969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113212550001.

It is not an unprimeable number, because it can be changed into a prime (113212550021) 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, 18868758331 + ... + 18868758336.

It is an arithmetic number, because the mean of its divisors is an integer number (37737516668).

Almost surely, 2^113212550001 is an apocalyptic number.

It is an amenable number.

113212550001 is a deficient number, since it is larger than the sum of its proper divisors (37737516671).

113212550001 is an equidigital number, since it uses as much as digits as its factorization.

113212550001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37737516670.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 113212550001 its reverse (100055212311), we get a palindrome (213267762312).

The spelling of 113212550001 in words is "one hundred thirteen billion, two hundred twelve million, five hundred fifty thousand, one".