100121021201000 has 64 divisors (see below), whose sum is σ = 234731151046080. Its totient is φ = 39971833876800.

The previous prime is 100121021200987. The next prime is 100121021201009. The reversal of 100121021201000 is 102120121001.

It is not an unprimeable number, because it can be changed into a prime (100121021201009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95194994 + ... + 96240993.

It is an arithmetic number, because the mean of its divisors is an integer number (3667674235095).

Almost surely, 2^{100121021201000} is an apocalyptic number.

100121021201000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121021201000 is an abundant number, since it is smaller than the sum of its proper divisors (134610129845080).

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

100121021201000 is a wasteful number, since it uses less digits than its factorization.

100121021201000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191436531 (or 191436517 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100121021201000 its reverse (102120121001), we get a palindrome (100223141322001).

The spelling of 100121021201000 in words is "one hundred trillion, one hundred twenty-one billion, twenty-one million, two hundred one thousand".