121102040 has 32 divisors (see below), whose sum is σ = 272792880. Its totient is φ = 48385152.

The previous prime is 121102039. The next prime is 121102049. The reversal of 121102040 is 40201121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68447 + ... + 70193.

Almost surely, 2^121102040 is an apocalyptic number.

121102040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102040 is an abundant number, since it is smaller than the sum of its proper divisors (151690840).

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

121102040 is a wasteful number, since it uses less digits than its factorization.

121102040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491 (or 3487 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121102040 is about 11004.6372043789. The cubic root of 121102040 is about 494.7477407319.

Adding to 121102040 its reverse (40201121), we get a palindrome (161303161).

The spelling of 121102040 in words is "one hundred twenty-one million, one hundred two thousand, forty".