21120221211002 has 8 divisors (see below), whose sum is σ = 31707856000512. Its totient is φ = 10550935877500.

The previous prime is 21120221210983. The next prime is 21120221211053. The reversal of 21120221211002 is 20011212202112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4587361124 + ... + 4587365727.

It is an arithmetic number, because the mean of its divisors is an integer number (3963482000064).

Almost surely, 2^{21120221211002} is an apocalyptic number.

21120221211002 is a deficient number, since it is larger than the sum of its proper divisors (10587634789510).

21120221211002 is a wasteful number, since it uses less digits than its factorization.

21120221211002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174728004.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21120221211002 its reverse (20011212202112), we get a palindrome (41131433413114).

It can be divided in two parts, 21120 and 221211002, that added together give a palindrome (221232122).

The spelling of 21120221211002 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-one million, two hundred eleven thousand, two".