1122222121002 has 24 divisors (see below), whose sum is σ = 2559453960960. Its totient is φ = 354385932840.

The previous prime is 1122222120979. The next prime is 1122222121037. The reversal of 1122222121002 is 2001212222211.

It is a happy number.

1122222121002 is a `hidden beast` number, since 11 + 222 + 221 + 210 + 0 + 2 = 666.

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 11 ways as a sum of consecutive naturals, for example, 1640675274 + ... + 1640675957.

It is an arithmetic number, because the mean of its divisors is an integer number (106643915040).

Almost surely, 2^{1122222121002} is an apocalyptic number.

1122222121002 is an abundant number, since it is smaller than the sum of its proper divisors (1437231839958).

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

1122222121002 is a wasteful number, since it uses less digits than its factorization.

1122222121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281351258 (or 3281351255 counting only the distinct ones).

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

Adding to 1122222121002 its reverse (2001212222211), we get a palindrome (3123434343213).

The spelling of 1122222121002 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, two".