21032202042 has 32 divisors (see below), whose sum is σ = 46752192000. Its totient is φ = 7008639264.

The previous prime is 21032202007. The next prime is 21032202043. The reversal of 21032202042 is 24020223012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21032202043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129783 + ... + 242709.

It is an arithmetic number, because the mean of its divisors is an integer number (1461006000).

Almost surely, 2^21032202042 is an apocalyptic number.

21032202042 is an abundant number, since it is smaller than the sum of its proper divisors (25719989958).

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

21032202042 is a wasteful number, since it uses less digits than its factorization.

21032202042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116387 (or 116381 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21032202042 its reverse (24020223012), we get a palindrome (45052425054).

The spelling of 21032202042 in words is "twenty-one billion, thirty-two million, two hundred two thousand, forty-two".