2002111101221 has 48 divisors (see below), whose sum is σ = 2565894868992. Its totient is φ = 1544640098400.

The previous prime is 2002111101217. The next prime is 2002111101229. The reversal of 2002111101221 is 1221011112002.

It is not a de Polignac number, because 2002111101221 - 2² = 2002111101217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002111101196 and 2002111101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002111101229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114587516 + ... + 114604986.

It is an arithmetic number, because the mean of its divisors is an integer number (53456143104).

Almost surely, 2^{2002111101221} is an apocalyptic number.

It is an amenable number.

2002111101221 is a deficient number, since it is larger than the sum of its proper divisors (563783767771).

2002111101221 is a wasteful number, since it uses less digits than its factorization.

2002111101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19590 (or 19583 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2002111101221 its reverse (1221011112002), we get a palindrome (3223122213223).

The spelling of 2002111101221 in words is "two trillion, two billion, one hundred eleven million, one hundred one thousand, two hundred twenty-one".