21002100201122 has 16 divisors (see below), whose sum is σ = 32531592771072. Its totient is φ = 10158490356960.

The previous prime is 21002100201101. The next prime is 21002100201139. The reversal of 21002100201122 is 22110200120012.

It is a junction number, because it is equal to n+sod(n) for n = 21002100201097 and 21002100201106.

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, 63436763 + ... + 63766974.

It is an arithmetic number, because the mean of its divisors is an integer number (2033224548192).

Almost surely, 2^{21002100201122} is an apocalyptic number.

21002100201122 is a deficient number, since it is larger than the sum of its proper divisors (11529492569950).

21002100201122 is a wasteful number, since it uses less digits than its factorization.

21002100201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127206433.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21002100201122 its reverse (22110200120012), we get a palindrome (43112300321134).

The spelling of 21002100201122 in words is "twenty-one trillion, two billion, one hundred million, two hundred one thousand, one hundred twenty-two".