21402010322 has 16 divisors (see below), whose sum is σ = 40024539072. Its totient is φ = 8338445520.

The previous prime is 21402010321. The next prime is 21402010327. The reversal of 21402010322 is 22301020412.

It is a self number, because there is not a number n which added to its sum of digits gives 21402010322.

It is not an unprimeable number, because it can be changed into a prime (21402010321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69486893 + ... + 69487200.

It is an arithmetic number, because the mean of its divisors is an integer number (2501533692).

Almost surely, 2^21402010322 is an apocalyptic number.

21402010322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21402010322 is a deficient number, since it is larger than the sum of its proper divisors (18622528750).

21402010322 is a wasteful number, since it uses less digits than its factorization.

21402010322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138974113.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21402010322 its reverse (22301020412), we get a palindrome (43703030734).

The spelling of 21402010322 in words is "twenty-one billion, four hundred two million, ten thousand, three hundred twenty-two".