3212220202121 has 24 divisors (see below), whose sum is σ = 3767176304064. Its totient is φ = 2730904999200.

The previous prime is 3212220202063. The next prime is 3212220202127. The reversal of 3212220202121 is 1212020222123.

It is not a de Polignac number, because 3212220202121 - 2³⁸ = 2937342295177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3212220202093 and 3212220202102.

It is not an unprimeable number, because it can be changed into a prime (3212220202127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4499126 + ... + 5163968.

It is an arithmetic number, because the mean of its divisors is an integer number (156965679336).

Almost surely, 2^{3212220202121} is an apocalyptic number.

It is an amenable number.

3212220202121 is a deficient number, since it is larger than the sum of its proper divisors (554956101943).

3212220202121 is a wasteful number, since it uses less digits than its factorization.

3212220202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665661 (or 665654 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 3212220202121 its reverse (1212020222123), we get a palindrome (4424240424244).

The spelling of 3212220202121 in words is "three trillion, two hundred twelve billion, two hundred twenty million, two hundred two thousand, one hundred twenty-one".