121111322010 has 64 divisors (see below), whose sum is σ = 335615761152. Its totient is φ = 27397195776.

The previous prime is 121111321967. The next prime is 121111322027. The reversal of 121111322010 is 10223111121.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2952417 + ... + 2993156.

It is an arithmetic number, because the mean of its divisors is an integer number (5243996268).

Almost surely, 2^121111322010 is an apocalyptic number.

121111322010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111322010 is an abundant number, since it is smaller than the sum of its proper divisors (214504439142).

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

121111322010 is a wasteful number, since it uses less digits than its factorization.

121111322010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5945687.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121111322010 its reverse (10223111121), we get a palindrome (131334433131).

The spelling of 121111322010 in words is "one hundred twenty-one billion, one hundred eleven million, three hundred twenty-two thousand, ten".