21200101001122 has 4 divisors (see below), whose sum is σ = 31800151501686. Its totient is φ = 10600050500560.

The previous prime is 21200101001069. The next prime is 21200101001159. The reversal of 21200101001122 is 22110010100212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18682804614321 + 2517296386801 = 4322361^2 + 1586599^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300025250279 + ... + 5300025250282.

Almost surely, 2^{21200101001122} is an apocalyptic number.

21200101001122 is a deficient number, since it is larger than the sum of its proper divisors (10600050500564).

21200101001122 is a wasteful number, since it uses less digits than its factorization.

21200101001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600050500563.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21200101001122 its reverse (22110010100212), we get a palindrome (43310111101334).

The spelling of 21200101001122 in words is "twenty-one trillion, two hundred billion, one hundred one million, one thousand, one hundred twenty-two".