21020000201122 has 32 divisors (see below), whose sum is σ = 35972227412352. Its totient is φ = 9125915844864.

The previous prime is 21020000201099. The next prime is 21020000201143. The reversal of 21020000201122 is 22110200002012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12057628 + ... + 13690375.

It is an arithmetic number, because the mean of its divisors is an integer number (1124132106636).

Almost surely, 2^{21020000201122} is an apocalyptic number.

21020000201122 is a deficient number, since it is larger than the sum of its proper divisors (14952227211230).

21020000201122 is a wasteful number, since it uses less digits than its factorization.

21020000201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25749882.

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

Adding to 21020000201122 its reverse (22110200002012), we get a palindrome (43130200203134).

The spelling of 21020000201122 in words is "twenty-one trillion, twenty billion, two hundred one thousand, one hundred twenty-two".