121112001010 has 384 divisors, whose sum is σ = 305678790144. Its totient is φ = 33953955840.

The previous prime is 121112000939. The next prime is 121112001053. The reversal of 121112001010 is 10100211121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 700069284 + ... + 700069456.

It is an arithmetic number, because the mean of its divisors is an integer number (796038516).

Almost surely, 2^121112001010 is an apocalyptic number.

121112001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112001010 is an abundant number, since it is smaller than the sum of its proper divisors (184566789134).

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

121112001010 is a wasteful number, since it uses less digits than its factorization.

121112001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121112001010 its reverse (10100211121), we get a palindrome (131212212131).

The spelling of 121112001010 in words is "one hundred twenty-one billion, one hundred twelve million, one thousand, ten".