1211222121022 has 8 divisors (see below), whose sum is σ = 1855489206816. Its totient is φ = 592725718752.

The previous prime is 1211222120993. The next prime is 1211222121079. The reversal of 1211222121022 is 2201212221121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6442670763 + ... + 6442670950.

It is an arithmetic number, because the mean of its divisors is an integer number (231936150852).

Almost surely, 2^{1211222121022} is an apocalyptic number.

1211222121022 is a deficient number, since it is larger than the sum of its proper divisors (644267085794).

1211222121022 is a wasteful number, since it uses less digits than its factorization.

1211222121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12885341762.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1211222121022 its reverse (2201212221121), we get a palindrome (3412434342143).

The spelling of 1211222121022 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-two".