1222212122002 has 32 divisors (see below), whose sum is σ = 1953896767920. Its totient is φ = 571386316800.

The previous prime is 1222212121957. The next prime is 1222212122009. The reversal of 1222212122002 is 2002212122221.

It can be written as a sum of positive squares in 8 ways, for example, as 372369668841 + 849842453161 = 610221^2 + 921869^2 .

It is not an unprimeable number, because it can be changed into a prime (1222212122009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32548374 + ... + 32585902.

Almost surely, 2^{1222212122002} is an apocalyptic number.

1222212122002 is a deficient number, since it is larger than the sum of its proper divisors (731684645918).

1222212122002 is a wasteful number, since it uses less digits than its factorization.

1222212122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43806.

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

Adding to 1222212122002 its reverse (2002212122221), we get a palindrome (3224424244223).

The spelling of 1222212122002 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, two".