121100011010 has 128 divisors (see below), whose sum is σ = 263791779840. Its totient is φ = 39508128000.

The previous prime is 121100010979. The next prime is 121100011051. The reversal of 121100011010 is 10110001121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4842599 + ... + 4867541.

It is an arithmetic number, because the mean of its divisors is an integer number (2060873280).

Almost surely, 2^121100011010 is an apocalyptic number.

121100011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100011010 is an abundant number, since it is smaller than the sum of its proper divisors (142691768830).

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

121100011010 is a wasteful number, since it uses less digits than its factorization.

121100011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25104.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 121100011010 its reverse (10110001121), we get a palindrome (131210012131).

The spelling of 121100011010 in words is "one hundred twenty-one billion, one hundred million, eleven thousand, ten".