121100111212010 has 64 divisors (see below), whose sum is σ = 262259634574080. Its totient is φ = 39330600744960.

The previous prime is 121100111211983. The next prime is 121100111212019. The reversal of 121100111212010 is 10212111001121.

It is a super-2 number, since 2×121100111212010² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (121100111212019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7726970 + ... + 17375450.

It is an arithmetic number, because the mean of its divisors is an integer number (4097806790220).

Almost surely, 2^{121100111212010} is an apocalyptic number.

121100111212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100111212010 is an abundant number, since it is smaller than the sum of its proper divisors (141159523362070).

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

121100111212010 is a wasteful number, since it uses less digits than its factorization.

121100111212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9657951.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121100111212010 its reverse (10212111001121), we get a palindrome (131312222213131).

The spelling of 121100111212010 in words is "one hundred twenty-one trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, ten".