100121502 has 64 divisors (see below), whose sum is σ = 222082560. Its totient is φ = 29904000.

The previous prime is 100121473. The next prime is 100121521. The reversal of 100121502 is 205121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559249 + ... + 559427.

It is an arithmetic number, because the mean of its divisors is an integer number (3470040).

Almost surely, 2^100121502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100121502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111041280).

100121502 is an abundant number, since it is smaller than the sum of its proper divisors (121961058).

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

100121502 is a wasteful number, since it uses less digits than its factorization.

100121502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 100121502 is about 10006.0732557782. The cubic root of 100121502 is about 464.3467947186.

Adding to 100121502 its reverse (205121001), we get a palindrome (305242503).

The spelling of 100121502 in words is "one hundred million, one hundred twenty-one thousand, five hundred two".