21244030411020 has 48 divisors (see below), whose sum is σ = 59484571872768. Its totient is φ = 5664952231360.

The previous prime is 21244030410983. The next prime is 21244030411057. The reversal of 21244030411020 is 2011403044212.

It is an interprime number because it is at equal distance from previous prime (21244030410983) and next prime (21244030411057).

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, 1015614 + ... + 6596933.

It is an arithmetic number, because the mean of its divisors is an integer number (1239261914016).

Almost surely, 2^{21244030411020} is an apocalyptic number.

21244030411020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21244030411020 is an abundant number, since it is smaller than the sum of its proper divisors (38240541461748).

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

21244030411020 is a wasteful number, since it uses less digits than its factorization.

21244030411020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659070 (or 7659068 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21244030411020 its reverse (2011403044212), we get a palindrome (23255433455232).

The spelling of 21244030411020 in words is "twenty-one trillion, two hundred forty-four billion, thirty million, four hundred eleven thousand, twenty".