1211210001222 has 64 divisors (see below), whose sum is σ = 2693344604160. Its totient is φ = 360600336000.

The previous prime is 1211210001107. The next prime is 1211210001251. The reversal of 1211210001222 is 2221000121121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16475847 + ... + 16549197.

It is an arithmetic number, because the mean of its divisors is an integer number (42083509440).

Almost surely, 2^{1211210001222} is an apocalyptic number.

1211210001222 is an abundant number, since it is smaller than the sum of its proper divisors (1482134602938).

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

1211210001222 is a wasteful number, since it uses less digits than its factorization.

1211210001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80229.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1211210001222 its reverse (2221000121121), we get a palindrome (3432210122343).

The spelling of 1211210001222 in words is "one trillion, two hundred eleven billion, two hundred ten million, one thousand, two hundred twenty-two".