1212222212002 has 16 divisors (see below), whose sum is σ = 1829975810040. Its totient is φ = 602230531968.

The previous prime is 1212222211943. The next prime is 1212222212009. The reversal of 1212222212002 is 2002122222121.

It can be written as a sum of positive squares in 4 ways, for example, as 1204618197601 + 7604014401 = 1097551^2 + 87201^2 .

It is not an unprimeable number, because it can be changed into a prime (1212222212009) 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, 15156774 + ... + 15236542.

Almost surely, 2^{1212222212002} is an apocalyptic number.

1212222212002 is a deficient number, since it is larger than the sum of its proper divisors (617753598038).

1212222212002 is a wasteful number, since it uses less digits than its factorization.

1212222212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128325.

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

Adding to 1212222212002 its reverse (2002122222121), we get a palindrome (3214344434123).

The spelling of 1212222212002 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twelve thousand, two".