1211100022122 has 16 divisors (see below), whose sum is σ = 2425087062720. Its totient is φ = 403218837632.

The previous prime is 1211100022117. The next prime is 1211100022127. The reversal of 1211100022122 is 2212200011121.

It is an interprime number because it is at equal distance from previous prime (1211100022117) and next prime (1211100022127).

It is not an unprimeable number, because it can be changed into a prime (1211100022127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120286983 + ... + 120297050.

It is an arithmetic number, because the mean of its divisors is an integer number (151567941420).

Almost surely, 2^{1211100022122} is an apocalyptic number.

1211100022122 is an abundant number, since it is smaller than the sum of its proper divisors (1213987040598).

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

1211100022122 is a wasteful number, since it uses less digits than its factorization.

1211100022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240584877.

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

Adding to 1211100022122 its reverse (2212200011121), we get a palindrome (3423300033243).

The spelling of 1211100022122 in words is "one trillion, two hundred eleven billion, one hundred million, twenty-two thousand, one hundred twenty-two".