21101130210020 has 48 divisors (see below), whose sum is σ = 50647830739968. Its totient is φ = 7233942038400.

The previous prime is 21101130209981. The next prime is 21101130210037. The reversal of 21101130210020 is 2001203110112.

It is a super-2 number, since 2×21101130210020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 21101130209977 and 21101130210004.

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, 6225332 + ... + 8997611.

It is an arithmetic number, because the mean of its divisors is an integer number (1055163140416).

Almost surely, 2^{21101130210020} is an apocalyptic number.

21101130210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21101130210020 is an abundant number, since it is smaller than the sum of its proper divisors (29546700529948).

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

21101130210020 is a wasteful number, since it uses less digits than its factorization.

21101130210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15232860 (or 15232858 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21101130210020 its reverse (2001203110112), we get a palindrome (23102333320132).

The spelling of 21101130210020 in words is "twenty-one trillion, one hundred one billion, one hundred thirty million, two hundred ten thousand, twenty".