20102121202 has 16 divisors (see below), whose sum is σ = 30241823040. Its totient is φ = 10021535568.

The previous prime is 20102121181. The next prime is 20102121227. The reversal of 20102121202 is 20212120102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2860449 + ... + 2867467.

It is an arithmetic number, because the mean of its divisors is an integer number (1890113940).

Almost surely, 2^20102121202 is an apocalyptic number.

20102121202 is a deficient number, since it is larger than the sum of its proper divisors (10139701838).

20102121202 is a wasteful number, since it uses less digits than its factorization.

20102121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11025.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20102121202 its reverse (20212120102), we get a palindrome (40314241304).

It can be divided in two parts, 2010 and 2121202, that added together give a palindrome (2123212).

The spelling of 20102121202 in words is "twenty billion, one hundred two million, one hundred twenty-one thousand, two hundred two".