21122146760 has 64 divisors (see below), whose sum is σ = 55833382080. Its totient is φ = 7089949440.

The previous prime is 21122146739. The next prime is 21122146783. The reversal of 21122146760 is 6764122112.

It is a super-2 number, since 2×21122146760² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1840622 + ... + 1852061.

It is an arithmetic number, because the mean of its divisors is an integer number (872396595).

Almost surely, 2^21122146760 is an apocalyptic number.

21122146760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122146760 is an abundant number, since it is smaller than the sum of its proper divisors (34711235320).

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

21122146760 is a wasteful number, since it uses less digits than its factorization.

21122146760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692718 (or 3692714 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 21122146760 its reverse (6764122112), we get a palindrome (27886268872).

The spelling of 21122146760 in words is "twenty-one billion, one hundred twenty-two million, one hundred forty-six thousand, seven hundred sixty".