1212102002028 has 24 divisors (see below), whose sum is σ = 2977092637120. Its totient is φ = 382769053200.

The previous prime is 1212102001997. The next prime is 1212102002029. The reversal of 1212102002028 is 8202002012121.

It is a super-2 number, since 2×1212102002028² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212102001995 and 1212102002013.

It is not an unprimeable number, because it can be changed into a prime (1212102002029) 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, 2658118198 + ... + 2658118653.

Almost surely, 2^{1212102002028} is an apocalyptic number.

It is an amenable number.

1212102002028 is an abundant number, since it is smaller than the sum of its proper divisors (1764990635092).

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

1212102002028 is a wasteful number, since it uses less digits than its factorization.

1212102002028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316236877 (or 5316236875 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 1212102002028 its reverse (8202002012121), we get a palindrome (9414104014149).

The spelling of 1212102002028 in words is "one trillion, two hundred twelve billion, one hundred two million, two thousand, twenty-eight".