21203010054 has 12 divisors (see below), whose sum is σ = 45939855156. Its totient is φ = 7067670012.

The previous prime is 21203010053. The next prime is 21203010061. The reversal of 21203010054 is 45001030212.

21203010054 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1177945003 = 21203010054 / (2 + 1 + 2 + 0 + 3 + 0 + 1 + 0 + 0 + 5 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203010053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 588972484 + ... + 588972519.

It is an arithmetic number, because the mean of its divisors is an integer number (3828321263).

Almost surely, 2^21203010054 is an apocalyptic number.

21203010054 is an abundant number, since it is smaller than the sum of its proper divisors (24736845102).

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

21203010054 is a wasteful number, since it uses less digits than its factorization.

21203010054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177945011 (or 1177945008 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 21203010054 its reverse (45001030212), we get a palindrome (66204040266).

The spelling of 21203010054 in words is "twenty-one billion, two hundred three million, ten thousand, fifty-four".