100100121121210 has 64 divisors (see below), whose sum is σ = 211468738328064. Its totient is φ = 33399468288000.

The previous prime is 100100121121207. The next prime is 100100121121229. The reversal of 100100121121210 is 12121121001001.

It is a happy number.

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, 42338022 + ... + 44639761.

It is an arithmetic number, because the mean of its divisors is an integer number (3304199036376).

Almost surely, 2^{100100121121210} is an apocalyptic number.

100100121121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100100121121210 is an abundant number, since it is smaller than the sum of its proper divisors (111368617206854).

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

100100121121210 is a wasteful number, since it uses less digits than its factorization.

100100121121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86978239.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100100121121210 its reverse (12121121001001), we get a palindrome (112221242122211).

The spelling of 100100121121210 in words is "one hundred trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred ten".