1011221210002 has 4 divisors (see below), whose sum is σ = 1516831815006. Its totient is φ = 505610605000.

The previous prime is 1011221209937. The next prime is 1011221210009. The reversal of 1011221210002 is 2000121221101.

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., 846953930601 + 164267279401 = 920301^2 + 405299^2 .

It is not an unprimeable number, because it can be changed into a prime (1011221210009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252805302499 + ... + 252805302502.

Almost surely, 2^{1011221210002} is an apocalyptic number.

1011221210002 is a deficient number, since it is larger than the sum of its proper divisors (505610605004).

1011221210002 is an equidigital number, since it uses as much as digits as its factorization.

1011221210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505610605003.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1011221210002 its reverse (2000121221101), we get a palindrome (3011342431103).

The spelling of 1011221210002 in words is "one trillion, eleven billion, two hundred twenty-one million, two hundred ten thousand, two".