21320101202 has 4 divisors (see below), whose sum is σ = 31980151806. Its totient is φ = 10660050600.

The previous prime is 21320101199. The next prime is 21320101207. The reversal of 21320101202 is 20210102312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14881804081 + 6438297121 = 121991^2 + 80239^2 .

It is not an unprimeable number, because it can be changed into a prime (21320101207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330025299 + ... + 5330025302.

Almost surely, 2^21320101202 is an apocalyptic number.

21320101202 is a deficient number, since it is larger than the sum of its proper divisors (10660050604).

21320101202 is a wasteful number, since it uses less digits than its factorization.

21320101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10660050603.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21320101202 its reverse (20210102312), we get a palindrome (41530203514).

The spelling of 21320101202 in words is "twenty-one billion, three hundred twenty million, one hundred one thousand, two hundred two".