1011220020002 has 4 divisors (see below), whose sum is σ = 1516830030006. Its totient is φ = 505610010000.

The previous prime is 1011220020001. The next prime is 1011220020029. The reversal of 1011220020002 is 2000200221101.

It is a happy number.

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., 966660609721 + 44559410281 = 983189^2 + 211091^2 .

It is not an unprimeable number, because it can be changed into a prime (1011220020001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252805004999 + ... + 252805005002.

Almost surely, 2^{1011220020002} is an apocalyptic number.

1011220020002 is a deficient number, since it is larger than the sum of its proper divisors (505610010004).

1011220020002 is an equidigital number, since it uses as much as digits as its factorization.

1011220020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505610010003.

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

Adding to 1011220020002 its reverse (2000200221101), we get a palindrome (3011420241103).

The spelling of 1011220020002 in words is "one trillion, eleven billion, two hundred twenty million, twenty thousand, two".