20401213052260 has 48 divisors (see below), whose sum is σ = 43119645004800. Its totient is φ = 8107714892160.

The previous prime is 20401213052237. The next prime is 20401213052273. The reversal of 20401213052260 is 6225031210402.

It is a super-2 number, since 2×20401213052260² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32340465 + ... + 32965255.

It is an arithmetic number, because the mean of its divisors is an integer number (898325937600).

Almost surely, 2^{20401213052260} is an apocalyptic number.

20401213052260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20401213052260 is an abundant number, since it is smaller than the sum of its proper divisors (22718431952540).

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

20401213052260 is a wasteful number, since it uses less digits than its factorization.

20401213052260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635356 (or 635354 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 20401213052260 its reverse (6225031210402), we get a palindrome (26626244262662).

The spelling of 20401213052260 in words is "twenty trillion, four hundred one billion, two hundred thirteen million, fifty-two thousand, two hundred sixty".