20100121202 has 8 divisors (see below), whose sum is σ = 34457350656. Its totient is φ = 8614337652.

The previous prime is 20100121187. The next prime is 20100121211. The reversal of 20100121202 is 20212100102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717861458 + ... + 717861485.

It is an arithmetic number, because the mean of its divisors is an integer number (4307168832).

Almost surely, 2^20100121202 is an apocalyptic number.

20100121202 is a deficient number, since it is larger than the sum of its proper divisors (14357229454).

20100121202 is a wasteful number, since it uses less digits than its factorization.

20100121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435722952.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100121202 its reverse (20212100102), we get a palindrome (40312221304).

The spelling of 20100121202 in words is "twenty billion, one hundred million, one hundred twenty-one thousand, two hundred two".