121010190 has 64 divisors (see below), whose sum is σ = 333172224. Its totient is φ = 27554688.

The previous prime is 121010189. The next prime is 121010207. The reversal of 121010190 is 91010121.

It is a super-2 number, since 2×121010190² = 29286932167672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 63532 + ... + 65408.

It is an arithmetic number, because the mean of its divisors is an integer number (5205816).

Almost surely, 2^121010190 is an apocalyptic number.

121010190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121010190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166586112).

121010190 is an abundant number, since it is smaller than the sum of its proper divisors (212162034).

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

121010190 is a wasteful number, since it uses less digits than its factorization.

121010190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 121010190 is about 11000.4631720669. The cubic root of 121010190 is about 494.6226284065.

The spelling of 121010190 in words is "one hundred twenty-one million, ten thousand, one hundred ninety".