2031003211221 has 12 divisors (see below), whose sum is σ = 2936993707648. Its totient is φ = 1352468724264.

The previous prime is 2031003211177. The next prime is 2031003211247. The reversal of 2031003211221 is 1221123001302.

2031003211221 is a `hidden beast` number, since 2 + 0 + 310 + 0 + 321 + 12 + 21 = 666.

It is not a de Polignac number, because 2031003211221 - 2⁶ = 2031003211157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031003211194 and 2031003211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031003211021) 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, 127776325 + ... + 127792218.

Almost surely, 2^{2031003211221} is an apocalyptic number.

It is an amenable number.

2031003211221 is a deficient number, since it is larger than the sum of its proper divisors (905990496427).

2031003211221 is a wasteful number, since it uses less digits than its factorization.

2031003211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255569432 (or 255569429 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2031003211221 its reverse (1221123001302), we get a palindrome (3252126212523).

The spelling of 2031003211221 in words is "two trillion, thirty-one billion, three million, two hundred eleven thousand, two hundred twenty-one".