100121221122210 has 48 divisors (see below), whose sum is σ = 260319939834240. Its totient is φ = 26698503589920.

The previous prime is 100121221122203. The next prime is 100121221122229. The reversal of 100121221122210 is 12221122121001.

100121221122210 is a `hidden beast` number, since 10 + 0 + 1 + 212 + 211 + 22 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5223946 + ... + 15084165.

It is an arithmetic number, because the mean of its divisors is an integer number (5423332079880).

Almost surely, 2^{100121221122210} is an apocalyptic number.

100121221122210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100121221122210 is an abundant number, since it is smaller than the sum of its proper divisors (160198718712030).

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

100121221122210 is a wasteful number, since it uses less digits than its factorization.

100121221122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20362903 (or 20362900 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 100121221122210 its reverse (12221122121001), we get a palindrome (112342343243211).

The spelling of 100121221122210 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred ten".