10002121212222 has 64 divisors (see below), whose sum is σ = 23941496401920. Its totient is φ = 3086208496800.

The previous prime is 10002121212217. The next prime is 10002121212277. The reversal of 10002121212222 is 22221212120001.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 10002121212195 and 10002121212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129852429 + ... + 129929432.

It is an arithmetic number, because the mean of its divisors is an integer number (374085881280).

Almost surely, 2^{10002121212222} is an apocalyptic number.

10002121212222 is an abundant number, since it is smaller than the sum of its proper divisors (13939375189698).

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

10002121212222 is a wasteful number, since it uses less digits than its factorization.

10002121212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259781926 (or 259781920 counting only the distinct ones).

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

Adding to 10002121212222 its reverse (22221212120001), we get a palindrome (32223333332223).

The spelling of 10002121212222 in words is "ten trillion, two billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twenty-two".