121101222040 has 16 divisors (see below), whose sum is σ = 272477749680. Its totient is φ = 48440488800.

The previous prime is 121101222031. The next prime is 121101222041. The reversal of 121101222040 is 40222101121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101222041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1513765236 + ... + 1513765315.

It is an arithmetic number, because the mean of its divisors is an integer number (17029859355).

Almost surely, 2^121101222040 is an apocalyptic number.

121101222040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101222040 is an abundant number, since it is smaller than the sum of its proper divisors (151376527640).

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

121101222040 is a wasteful number, since it uses less digits than its factorization.

121101222040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027530562 (or 3027530558 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121101222040 its reverse (40222101121), we get a palindrome (161323323161).

The spelling of 121101222040 in words is "one hundred twenty-one billion, one hundred one million, two hundred twenty-two thousand, forty".