21032101240 has 32 divisors (see below), whose sum is σ = 47326608000. Its totient is φ = 8412061824.

The previous prime is 21032101229. The next prime is 21032101261. The reversal of 21032101240 is 4210123012.

It is a super-3 number, since 3×21032101240³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631321 + ... + 663799.

It is an arithmetic number, because the mean of its divisors is an integer number (1478956500).

Almost surely, 2^21032101240 is an apocalyptic number.

21032101240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21032101240 is an abundant number, since it is smaller than the sum of its proper divisors (26294506760).

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

21032101240 is a wasteful number, since it uses less digits than its factorization.

21032101240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48679 (or 48675 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21032101240 its reverse (4210123012), we get a palindrome (25242224252).

The spelling of 21032101240 in words is "twenty-one billion, thirty-two million, one hundred one thousand, two hundred forty".