221002000211121 has 32 divisors (see below), whose sum is σ = 302901493142400. Its totient is φ = 143225674951680.

The previous prime is 221002000211119. The next prime is 221002000211123. The reversal of 221002000211121 is 121112000200122.

It is an interprime number because it is at equal distance from previous prime (221002000211119) and next prime (221002000211123).

It is not a de Polignac number, because 221002000211121 - 2¹ = 221002000211119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221002000211121.

It is not an unprimeable number, because it can be changed into a prime (221002000211123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031556750 + ... + 1031770968.

It is an arithmetic number, because the mean of its divisors is an integer number (9465671660700).

Almost surely, 2^{221002000211121} is an apocalyptic number.

It is an amenable number.

221002000211121 is a deficient number, since it is larger than the sum of its proper divisors (81899492931279).

221002000211121 is a wasteful number, since it uses less digits than its factorization.

221002000211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222449.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221002000211121 its reverse (121112000200122), we get a palindrome (342114000411243).

The spelling of 221002000211121 in words is "two hundred twenty-one trillion, two billion, two hundred eleven thousand, one hundred twenty-one".