2221211021000 has 32 divisors (see below), whose sum is σ = 5197633791480. Its totient is φ = 888484408000.

The previous prime is 2221211020999. The next prime is 2221211021021. The reversal of 2221211021000 is 1201121222.

It can be written as a sum of positive squares in 4 ways, for example, as 305594473636 + 1915616547364 = 552806^2 + 1384058^2 .

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, 1110604511 + ... + 1110606510.

Almost surely, 2^{2221211021000} is an apocalyptic number.

2221211021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221211021000 is an abundant number, since it is smaller than the sum of its proper divisors (2976422770480).

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

2221211021000 is a wasteful number, since it uses less digits than its factorization.

2221211021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221211042 (or 2221211028 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2221211021000 its reverse (1201121222), we get a palindrome (2222412142222).

The spelling of 2221211021000 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, twenty-one thousand".