121251102 has 64 divisors (see below), whose sum is σ = 285410304. Its totient is φ = 33626880.

The previous prime is 121251083. The next prime is 121251127. The reversal of 121251102 is 201152121.

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, 217408 + ... + 217964.

It is an arithmetic number, because the mean of its divisors is an integer number (4459536).

Almost surely, 2^121251102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121251102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142705152).

121251102 is an abundant number, since it is smaller than the sum of its proper divisors (164159202).

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

121251102 is a wasteful number, since it uses less digits than its factorization.

121251102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713.

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

The square root of 121251102 is about 11011.4078119013. The cubic root of 121251102 is about 494.9506490948.

The spelling of 121251102 in words is "one hundred twenty-one million, two hundred fifty-one thousand, one hundred two".