21122201002 has 16 divisors (see below), whose sum is σ = 36239867712. Its totient is φ = 9044776800.

The previous prime is 21122200999. The next prime is 21122201027. The reversal of 21122201002 is 20010222112.

It is a happy number.

It is a super-2 number, since 2×21122201002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615624 + ... + 649027.

It is an arithmetic number, because the mean of its divisors is an integer number (2264991732).

Almost surely, 2^21122201002 is an apocalyptic number.

21122201002 is a deficient number, since it is larger than the sum of its proper divisors (15117666710).

21122201002 is a wasteful number, since it uses less digits than its factorization.

21122201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265853.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21122201002 its reverse (20010222112), we get a palindrome (41132423114).

The spelling of 21122201002 in words is "twenty-one billion, one hundred twenty-two million, two hundred one thousand, two".