101556400122004 has 12 divisors (see below), whose sum is σ = 181076977576404. Its totient is φ = 49820120814464.

The previous prime is 101556400121941. The next prime is 101556400122091. The reversal of 101556400122004 is 400221004655101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77247575683600 + 24308824438404 = 8789060^2 + 4930398^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239519811397 + ... + 239519811820.

It is an arithmetic number, because the mean of its divisors is an integer number (15089748131367).

Almost surely, 2^{101556400122004} is an apocalyptic number.

It is an amenable number.

101556400122004 is a deficient number, since it is larger than the sum of its proper divisors (79520577454400).

101556400122004 is a wasteful number, since it uses less digits than its factorization.

101556400122004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479039623274 (or 479039623272 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 101556400122004 its reverse (400221004655101), we get a palindrome (501777404777105).

The spelling of 101556400122004 in words is "one hundred one trillion, five hundred fifty-six billion, four hundred million, one hundred twenty-two thousand, four".