121000112010 has 64 divisors (see below), whose sum is σ = 323240492160. Its totient is φ = 32209344000.

The previous prime is 121000111951. The next prime is 121000112027. The reversal of 121000112010 is 10211000121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121000111983 and 121000112001.

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, 245991 + ... + 550010.

It is an arithmetic number, because the mean of its divisors is an integer number (5050632690).

Almost surely, 2^121000112010 is an apocalyptic number.

121000112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121000112010 is an abundant number, since it is smaller than the sum of its proper divisors (202240380150).

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

121000112010 is a wasteful number, since it uses less digits than its factorization.

121000112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796580 (or 796574 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121000112010 its reverse (10211000121), we get a palindrome (131211112131).

The spelling of 121000112010 in words is "one hundred twenty-one billion, one hundred twelve thousand, ten".