101200021002 has 16 divisors (see below), whose sum is σ = 224888935680. Its totient is φ = 33733340316.

The previous prime is 101200020979. The next prime is 101200021003. The reversal of 101200021002 is 200120002101.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (101200021003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937037178 + ... + 937037285.

It is an arithmetic number, because the mean of its divisors is an integer number (14055558480).

Almost surely, 2^101200021002 is an apocalyptic number.

101200021002 is an abundant number, since it is smaller than the sum of its proper divisors (123688914678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101200021002 is a wasteful number, since it uses less digits than its factorization.

101200021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874074474 (or 1874074468 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 101200021002 its reverse (200120002101), we get a palindrome (301320023103).

The spelling of 101200021002 in words is "one hundred one billion, two hundred million, twenty-one thousand, two".