1000220121002 has 8 divisors (see below), whose sum is σ = 1588584898116. Its totient is φ = 470691821632.

The previous prime is 1000220120993. The next prime is 1000220121007. The reversal of 1000220121002 is 2001210220001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 835960947481 + 164259173521 = 914309^2 + 405289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1000220121007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14709119393 + ... + 14709119460.

Almost surely, 2^{1000220121002} is an apocalyptic number.

1000220121002 is a deficient number, since it is larger than the sum of its proper divisors (588364777114).

1000220121002 is a wasteful number, since it uses less digits than its factorization.

1000220121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29418238872.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000220121002 its reverse (2001210220001), we get a palindrome (3001430341003).

The spelling of 1000220121002 in words is "one trillion, two hundred twenty million, one hundred twenty-one thousand, two".