10021121502 has 16 divisors (see below), whose sum is σ = 22905420672. Its totient is φ = 2863177560.

The previous prime is 10021121447. The next prime is 10021121527. The reversal of 10021121502 is 20512112001.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 119299024 + ... + 119299107.

It is an arithmetic number, because the mean of its divisors is an integer number (1431588792).

Almost surely, 2^10021121502 is an apocalyptic number.

10021121502 is an abundant number, since it is smaller than the sum of its proper divisors (12884299170).

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

10021121502 is a wasteful number, since it uses less digits than its factorization.

10021121502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238598143.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 10021121502 its reverse (20512112001), we get a palindrome (30533233503).

The spelling of 10021121502 in words is "ten billion, twenty-one million, one hundred twenty-one thousand, five hundred two".