2002202122221 has 12 divisors (see below), whose sum is σ = 3305222551072. Its totient is φ = 1144115498376.

The previous prime is 2002202122213. The next prime is 2002202122229. The reversal of 2002202122221 is 1222212022002.

2002202122221 is a `hidden beast` number, since 200 + 220 + 2 + 1 + 22 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (2002202122213) and next prime (2002202122229).

It is not a de Polignac number, because 2002202122221 - 2³ = 2002202122213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002202122194 and 2002202122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002202122229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15890492971 + ... + 15890493096.

Almost surely, 2^{2002202122221} is an apocalyptic number.

2002202122221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2002202122221 is a deficient number, since it is larger than the sum of its proper divisors (1303020428851).

2002202122221 is a wasteful number, since it uses less digits than its factorization.

2002202122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31780986080 (or 31780986077 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2002202122221 its reverse (1222212022002), we get a palindrome (3224414144223).

The spelling of 2002202122221 in words is "two trillion, two billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty-one".