1211201022122 has 96 divisors (see below), whose sum is σ = 2293857449856. Its totient is φ = 466917609600.

The previous prime is 1211201022113. The next prime is 1211201022131. The reversal of 1211201022122 is 2212201021121.

It is an interprime number because it is at equal distance from previous prime (1211201022113) and next prime (1211201022131).

It is a self number, because there is not a number n which added to its sum of digits gives 1211201022122.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219935693 + ... + 219941199.

It is an arithmetic number, because the mean of its divisors is an integer number (23894348436).

Almost surely, 2^{1211201022122} is an apocalyptic number.

1211201022122 is a deficient number, since it is larger than the sum of its proper divisors (1082656427734).

1211201022122 is a wasteful number, since it uses less digits than its factorization.

1211201022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884 (or 5733 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211201022122 its reverse (2212201021121), we get a palindrome (3423402043243).

The spelling of 1211201022122 in words is "one trillion, two hundred eleven billion, two hundred one million, twenty-two thousand, one hundred twenty-two".