221002021202001 has 16 divisors (see below), whose sum is σ = 317337623077440. Its totient is φ = 136000649171520.

The previous prime is 221002021201979. The next prime is 221002021202023. The reversal of 221002021202001 is 100202120200122.

It is an interprime number because it is at equal distance from previous prime (221002021201979) and next prime (221002021202023).

It is not a de Polignac number, because 221002021202001 - 2¹⁵ = 221002021169233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221002021202041) 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, 3269431 + ... + 21276588.

It is an arithmetic number, because the mean of its divisors is an integer number (19833601442340).

Almost surely, 2^{221002021202001} is an apocalyptic number.

It is an amenable number.

221002021202001 is a deficient number, since it is larger than the sum of its proper divisors (96335601875439).

221002021202001 is a wasteful number, since it uses less digits than its factorization.

221002021202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24776896.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221002021202001 its reverse (100202120200122), we get a palindrome (321204141402123).

It can be divided in two parts, 22 and 1002021202001, that multiplied together give a palindrome (22044466444022).

The spelling of 221002021202001 in words is "two hundred twenty-one trillion, two billion, twenty-one million, two hundred two thousand, one".