1211122202202 has 48 divisors (see below), whose sum is σ = 2889406289952. Its totient is φ = 363576752160.

The previous prime is 1211122202201. The next prime is 1211122202231. The reversal of 1211122202202 is 2022022211121.

It is a happy number.

1211122202202 is a `hidden beast` number, since 1 + 211 + 12 + 220 + 220 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1211122202201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28561893 + ... + 28604264.

It is an arithmetic number, because the mean of its divisors is an integer number (60195964374).

Almost surely, 2^{1211122202202} is an apocalyptic number.

1211122202202 is an abundant number, since it is smaller than the sum of its proper divisors (1678284087750).

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

1211122202202 is a wasteful number, since it uses less digits than its factorization.

1211122202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57166283 (or 57166280 counting only the distinct ones).

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

Adding to 1211122202202 its reverse (2022022211121), we get a palindrome (3233144413323).

The spelling of 1211122202202 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred two thousand, two hundred two".