2222212121002 has 4 divisors (see below), whose sum is σ = 3333318181506. Its totient is φ = 1111106060500.

The previous prime is 2222212120949. The next prime is 2222212121009. The reversal of 2222212121002 is 2001212122222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1698515299441 + 523696821561 = 1303271^2 + 723669^2 .

It is not an unprimeable number, because it can be changed into a prime (2222212121009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555553030249 + ... + 555553030252.

Almost surely, 2^{2222212121002} is an apocalyptic number.

2222212121002 is a deficient number, since it is larger than the sum of its proper divisors (1111106060504).

2222212121002 is a wasteful number, since it uses less digits than its factorization.

2222212121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111106060503.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2222212121002 its reverse (2001212122222), we get a palindrome (4223424243224).

The spelling of 2222212121002 in words is "two trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, two".