10221121002000 has 80 divisors (see below), whose sum is σ = 32952894129792. Its totient is φ = 2725632265600.

The previous prime is 10221121001981. The next prime is 10221121002013. The reversal of 10221121002000 is 20012112201.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 851754084 + ... + 851766083.

Almost surely, 2^{10221121002000} is an apocalyptic number.

10221121002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221121002000 is an abundant number, since it is smaller than the sum of its proper divisors (22731773127792).

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

10221121002000 is a wasteful number, since it uses less digits than its factorization.

10221121002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703520193 (or 1703520177 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10221121002000 its reverse (20012112201), we get a palindrome (10241133114201).

The spelling of 10221121002000 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty-one million, two thousand".