21030220102132 has 6 divisors (see below), whose sum is σ = 36802885178738. Its totient is φ = 10515110051064.

The previous prime is 21030220102123. The next prime is 21030220102201. The reversal of 21030220102132 is 23120102203012.

It can be written as a sum of positive squares in only one way, i.e., 13513608279396 + 7516611822736 = 3676086^2 + 2741644^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628777512763 + ... + 2628777512770.

Almost surely, 2^{21030220102132} is an apocalyptic number.

It is an amenable number.

21030220102132 is a deficient number, since it is larger than the sum of its proper divisors (15772665076606).

21030220102132 is a wasteful number, since it uses less digits than its factorization.

21030220102132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5257555025537 (or 5257555025535 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21030220102132 its reverse (23120102203012), we get a palindrome (44150322305144).

The spelling of 21030220102132 in words is "twenty-one trillion, thirty billion, two hundred twenty million, one hundred two thousand, one hundred thirty-two".