100121000123100 has 288 divisors, whose sum is σ = 332107227277056. Its totient is φ = 23066559129600.

The previous prime is 100121000123099. The next prime is 100121000123129. The reversal of 100121000123100 is 1321000121001.

It is a super-2 number, since 2×100121000123100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4284489 + ... + 14785088.

It is an arithmetic number, because the mean of its divisors is an integer number (1153150094712).

Almost surely, 2^{100121000123100} is an apocalyptic number.

100121000123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121000123100 is an abundant number, since it is smaller than the sum of its proper divisors (231986227153956).

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

100121000123100 is a wasteful number, since it uses less digits than its factorization.

100121000123100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19069685 (or 19069678 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 100121000123100 its reverse (1321000121001), we get a palindrome (101442000244101).

The spelling of 100121000123100 in words is "one hundred trillion, one hundred twenty-one billion, one hundred twenty-three thousand, one hundred".