1002121222212 has 54 divisors (see below), whose sum is σ = 2784360239934. Its totient is φ = 303673096320.

The previous prime is 1002121222187. The next prime is 1002121222231. The reversal of 1002121222212 is 2122221212001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 859151025216 + 142970196996 = 926904^2 + 378114^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115023333 + ... + 115032044.

Almost surely, 2^{1002121222212} is an apocalyptic number.

1002121222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002121222212 is an abundant number, since it is smaller than the sum of its proper divisors (1782239017722).

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

1002121222212 is a wasteful number, since it uses less digits than its factorization.

1002121222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230055409 (or 230055393 counting only the distinct ones).

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

Adding to 1002121222212 its reverse (2122221212001), we get a palindrome (3124342434213).

The spelling of 1002121222212 in words is "one trillion, two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".