121027284 has 240 divisors, whose sum is σ = 397127808. Its totient is φ = 31352832.

The previous prime is 121027271. The next prime is 121027297. The reversal of 121027284 is 482720121.

It is an interprime number because it is at equal distance from previous prime (121027271) and next prime (121027297).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1657872 + ... + 1657944.

Almost surely, 2^121027284 is an apocalyptic number.

121027284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121027284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198563904).

121027284 is an abundant number, since it is smaller than the sum of its proper divisors (276100524).

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

121027284 is a wasteful number, since it uses less digits than its factorization.

121027284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 121027284 is about 11001.2401119147. The cubic root of 121027284 is about 494.6459175778.

The spelling of 121027284 in words is "one hundred twenty-one million, twenty-seven thousand, two hundred eighty-four".