20221001002000 has 80 divisors (see below), whose sum is σ = 49513297017600. Its totient is φ = 7986015523200.

The previous prime is 20221001001991. The next prime is 20221001002039. The reversal of 20221001002000 is 20010012202.

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 (10).

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, 63832510 + ... + 64148509.

It is an arithmetic number, because the mean of its divisors is an integer number (618916212720).

Almost surely, 2^{20221001002000} is an apocalyptic number.

20221001002000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221001002000 is an abundant number, since it is smaller than the sum of its proper divisors (29292296015600).

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

20221001002000 is a wasteful number, since it uses less digits than its factorization.

20221001002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127981121 (or 127981105 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20221001002000 its reverse (20010012202), we get a palindrome (20241011014202).

The spelling of 20221001002000 in words is "twenty trillion, two hundred twenty-one billion, one million, two thousand".