21401050153 has 32 divisors (see below), whose sum is σ = 25566363648. Its totient is φ = 17533929600.

The previous prime is 21401050133. The next prime is 21401050199. The reversal of 21401050153 is 35105010412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21401050153 - 2²¹ = 21398953001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21401050133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3669826 + ... + 3675652.

It is an arithmetic number, because the mean of its divisors is an integer number (798948864).

Almost surely, 2^21401050153 is an apocalyptic number.

It is an amenable number.

21401050153 is a deficient number, since it is larger than the sum of its proper divisors (4165313495).

21401050153 is a wasteful number, since it uses less digits than its factorization.

21401050153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6133.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 21401050153 its reverse (35105010412), we get a palindrome (56506060565).

The spelling of 21401050153 in words is "twenty-one billion, four hundred one million, fifty thousand, one hundred fifty-three".