21115451142114 has 16 divisors (see below), whose sum is σ = 48263888324928. Its totient is φ = 6032986040592.

The previous prime is 21115451142091. The next prime is 21115451142169. The reversal of 21115451142114 is 41124115451112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251374418317 + ... + 251374418400.

It is an arithmetic number, because the mean of its divisors is an integer number (3016493020308).

Almost surely, 2^{21115451142114} is an apocalyptic number.

21115451142114 is an abundant number, since it is smaller than the sum of its proper divisors (27148437182814).

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

21115451142114 is a wasteful number, since it uses less digits than its factorization.

21115451142114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502748836729.

The product of its digits is 6400, while the sum is 33.

Adding to 21115451142114 its reverse (41124115451112), we get a palindrome (62239566593226).

The spelling of 21115451142114 in words is "twenty-one trillion, one hundred fifteen billion, four hundred fifty-one million, one hundred forty-two thousand, one hundred fourteen".