21014402101220 has 48 divisors (see below), whose sum is σ = 48226693334400. Its totient is φ = 7628170840320.

The previous prime is 21014402101129. The next prime is 21014402101243. The reversal of 21014402101220 is 2210120441012.

It is a super-2 number, since 2×21014402101220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21014402101192 and 21014402101201.

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, 83811560 + ... + 84061919.

It is an arithmetic number, because the mean of its divisors is an integer number (1004722777800).

Almost surely, 2^{21014402101220} is an apocalyptic number.

21014402101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21014402101220 is an abundant number, since it is smaller than the sum of its proper divisors (27212291233180).

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

21014402101220 is a wasteful number, since it uses less digits than its factorization.

21014402101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167874068 (or 167874066 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21014402101220 its reverse (2210120441012), we get a palindrome (23224522542232).

The spelling of 21014402101220 in words is "twenty-one trillion, fourteen billion, four hundred two million, one hundred one thousand, two hundred twenty".