21153114214 has 16 divisors (see below), whose sum is σ = 33181704288. Its totient is φ = 10094559552.

The previous prime is 21153114211. The next prime is 21153114233. The reversal of 21153114214 is 41241135112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21153114211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482097 + ... + 524140.

It is an arithmetic number, because the mean of its divisors is an integer number (2073856518).

Almost surely, 2^21153114214 is an apocalyptic number.

21153114214 is a deficient number, since it is larger than the sum of its proper divisors (12028590074).

21153114214 is a wasteful number, since it uses less digits than its factorization.

21153114214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006719.

The product of its digits is 960, while the sum is 25.

Adding to 21153114214 its reverse (41241135112), we get a palindrome (62394249326).

The spelling of 21153114214 in words is "twenty-one billion, one hundred fifty-three million, one hundred fourteen thousand, two hundred fourteen".