2211222102021 has 24 divisors (see below), whose sum is σ = 3217488970176. Its totient is φ = 1463323216320.

The previous prime is 2211222101999. The next prime is 2211222102043. The reversal of 2211222102021 is 1202012221122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2211222101999) and next prime (2211222102043).

It is not a de Polignac number, because 2211222102021 - 2⁹ = 2211222101509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211222101985 and 2211222102003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211222101021) 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, 291601 + ... + 2123081.

It is an arithmetic number, because the mean of its divisors is an integer number (134062040424).

Almost surely, 2^{2211222102021} is an apocalyptic number.

It is an amenable number.

2211222102021 is a deficient number, since it is larger than the sum of its proper divisors (1006266868155).

2211222102021 is a wasteful number, since it uses less digits than its factorization.

2211222102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832473 (or 1832470 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2211222102021 its reverse (1202012221122), we get a palindrome (3413234323143).

The spelling of 2211222102021 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, one hundred two thousand, twenty-one".