1200002121022 has 8 divisors (see below), whose sum is σ = 1800807120000. Its totient is φ = 599733081024.

The previous prime is 1200002121013. The next prime is 1200002121079. The reversal of 1200002121022 is 2201212000021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1200002120993 and 1200002121011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133984147 + ... + 133993102.

It is an arithmetic number, because the mean of its divisors is an integer number (225100890000).

Almost surely, 2^{1200002121022} is an apocalyptic number.

1200002121022 is a deficient number, since it is larger than the sum of its proper divisors (600804998978).

1200002121022 is a wasteful number, since it uses less digits than its factorization.

1200002121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267979490.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200002121022 its reverse (2201212000021), we get a palindrome (3401214121043).

The spelling of 1200002121022 in words is "one trillion, two hundred billion, two million, one hundred twenty-one thousand, twenty-two".