1214134400021 has 16 divisors (see below), whose sum is σ = 1260823200000. Its totient is φ = 1167773616576.

The previous prime is 1214134399981. The next prime is 1214134400029. The reversal of 1214134400021 is 1200044314121.

It is not a de Polignac number, because 1214134400021 - 2⁶ = 1214134399957 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 1214134400021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214134400029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10457990 + ... + 10573448.

It is an arithmetic number, because the mean of its divisors is an integer number (78801450000).

Almost surely, 2^{1214134400021} is an apocalyptic number.

It is an amenable number.

1214134400021 is a deficient number, since it is larger than the sum of its proper divisors (46688799979).

1214134400021 is a wasteful number, since it uses less digits than its factorization.

1214134400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116876.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1214134400021 its reverse (1200044314121), we get a palindrome (2414178714142).

The spelling of 1214134400021 in words is "one trillion, two hundred fourteen billion, one hundred thirty-four million, four hundred thousand, twenty-one".