2221222021000 has 64 divisors (see below), whose sum is σ = 5308248142080. Its totient is φ = 869584772800.

The previous prime is 2221222020949. The next prime is 2221222021003. The reversal of 2221222021000 is 1202221222.

It is not an unprimeable number, because it can be changed into a prime (2221222021003) 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, 23583022 + ... + 23677021.

It is an arithmetic number, because the mean of its divisors is an integer number (82941377220).

Almost surely, 2^{2221222021000} is an apocalyptic number.

2221222021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221222021000 is an abundant number, since it is smaller than the sum of its proper divisors (3087026121080).

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

2221222021000 is a wasteful number, since it uses less digits than its factorization.

2221222021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47260111 (or 47260097 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2221222021000 its reverse (1202221222), we get a palindrome (2222424242222).

The spelling of 2221222021000 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand".