2221211202210 has 384 divisors, whose sum is σ = 7934386876416. Its totient is φ = 416137720320.

The previous prime is 2221211202173. The next prime is 2221211202251. The reversal of 2221211202210 is 122021121222.

It is a happy number.

2221211202210 is a `hidden beast` number, since 2 + 221 + 211 + 20 + 2 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3587179 + ... + 4160561.

It is an arithmetic number, because the mean of its divisors is an integer number (20662465824).

Almost surely, 2^{2221211202210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221211202210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3967193438208).

2221211202210 is an abundant number, since it is smaller than the sum of its proper divisors (5713175674206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221211202210 is a wasteful number, since it uses less digits than its factorization.

2221211202210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573470 (or 573467 counting only the distinct ones).

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

Adding to 2221211202210 its reverse (122021121222), we get a palindrome (2343232323432).

The spelling of 2221211202210 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred two thousand, two hundred ten".