4000013121100 has 18 divisors (see below), whose sum is σ = 8680028473004. Its totient is φ = 1600005248400.

The previous prime is 4000013121031. The next prime is 4000013121107. The reversal of 4000013121100 is 11213100004.

It is not an unprimeable number, because it can be changed into a prime (4000013121107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20000065506 + ... + 20000065705.

Almost surely, 2^{4000013121100} is an apocalyptic number.

It is an amenable number.

4000013121100 is an abundant number, since it is smaller than the sum of its proper divisors (4680015351904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4000013121100 is a wasteful number, since it uses less digits than its factorization.

4000013121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40000131225 (or 40000131218 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 4000013121100 its reverse (11213100004), we get a palindrome (4011226221104).

The spelling of 4000013121100 in words is "four trillion, thirteen million, one hundred twenty-one thousand, one hundred".