100121202222210 has 144 divisors (see below), whose sum is σ = 285171426651384. Its totient is φ = 24227502446592.

The previous prime is 100121202222149. The next prime is 100121202222233. The reversal of 100121202222210 is 12222202121001.

It is a happy number.

100121202222210 is a `hidden beast` number, since 10 + 0 + 1 + 21 + 202 + 222 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 40464903607209 + 59656298615001 = 6361203^2 + 7723749^2 .

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 71 ways as a sum of consecutive naturals, for example, 8218767 + ... + 16364306.

Almost surely, 2^{100121202222210} is an apocalyptic number.

100121202222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100121202222210 is an abundant number, since it is smaller than the sum of its proper divisors (185050224429174).

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

100121202222210 is a wasteful number, since it uses less digits than its factorization.

100121202222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24583217 (or 24583155 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100121202222210 its reverse (12222202121001), we get a palindrome (112343404343211).

The spelling of 100121202222210 in words is "one hundred trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, two hundred ten".