101921201002 has 16 divisors (see below), whose sum is σ = 154784509992. Its totient is φ = 50328907200.

The previous prime is 101921200999. The next prime is 101921201069. The reversal of 101921201002 is 200102129101.

It is a happy number.

It is a Cunningham number, because it is equal to 319251²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 101921201001 + 1 = 319251^2 + 1^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555273 + ... + 715660.

Almost surely, 2^101921201002 is an apocalyptic number.

101921201002 is a deficient number, since it is larger than the sum of its proper divisors (52863308990).

101921201002 is a wasteful number, since it uses less digits than its factorization.

101921201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271433.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 101921201002 in words is "one hundred one billion, nine hundred twenty-one million, two hundred one thousand, two".