1212122210202 has 48 divisors (see below), whose sum is σ = 2652480770472. Its totient is φ = 400008153600.

The previous prime is 1212122210191. The next prime is 1212122210209. The reversal of 1212122210202 is 2020122212121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1049680162521 + 162442047681 = 1024539^2 + 403041^2 .

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 (1212122210209) 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, 35573958 + ... + 35608014.

Almost surely, 2^{1212122210202} is an apocalyptic number.

1212122210202 is an abundant number, since it is smaller than the sum of its proper divisors (1440358560270).

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

1212122210202 is a wasteful number, since it uses less digits than its factorization.

1212122210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53743 (or 53740 counting only the distinct ones).

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

Adding to 1212122210202 its reverse (2020122212121), we get a palindrome (3232244422323).

The spelling of 1212122210202 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred ten thousand, two hundred two".