2201021021000 has 32 divisors (see below), whose sum is σ = 5150389191480. Its totient is φ = 880408408000.

The previous prime is 2201021020993. The next prime is 2201021021011. The reversal of 2201021021000 is 1201201022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1081728963844 + 1119292057156 = 1040062^2 + 1057966^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100509511 + ... + 1100511510.

Almost surely, 2^{2201021021000} is an apocalyptic number.

2201021021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201021021000 is an abundant number, since it is smaller than the sum of its proper divisors (2949368170480).

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

2201021021000 is a wasteful number, since it uses less digits than its factorization.

2201021021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201021042 (or 2201021028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2201021021000 its reverse (1201201022), we get a palindrome (2202222222022).

The spelling of 2201021021000 in words is "two trillion, two hundred one billion, twenty-one million, twenty-one thousand".