21301011512 has 32 divisors (see below), whose sum is σ = 44059820400. Its totient is φ = 9573484800.

The previous prime is 21301011497. The next prime is 21301011527. The reversal of 21301011512 is 21511010312.

It is an interprime number because it is at equal distance from previous prime (21301011497) and next prime (21301011527).

It is a super-2 number, since 2×21301011512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352039 + ... + 1367702.

Almost surely, 2^21301011512 is an apocalyptic number.

21301011512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21301011512 is an abundant number, since it is smaller than the sum of its proper divisors (22758808888).

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

21301011512 is a wasteful number, since it uses less digits than its factorization.

21301011512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719847 (or 2719843 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 21301011512 its reverse (21511010312), we get a palindrome (42812021824).

The spelling of 21301011512 in words is "twenty-one billion, three hundred one million, eleven thousand, five hundred twelve".