1020111201002 has 4 divisors (see below), whose sum is σ = 1530166801506. Its totient is φ = 510055600500.

The previous prime is 1020111200957. The next prime is 1020111201049. The reversal of 1020111201002 is 2001021110201.

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., 605827165801 + 414284035201 = 778349^2 + 643649^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255027800249 + ... + 255027800252.

Almost surely, 2^{1020111201002} is an apocalyptic number.

1020111201002 is a deficient number, since it is larger than the sum of its proper divisors (510055600504).

1020111201002 is an equidigital number, since it uses as much as digits as its factorization.

1020111201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510055600503.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020111201002 its reverse (2001021110201), we get a palindrome (3021132311203).

The spelling of 1020111201002 in words is "one trillion, twenty billion, one hundred eleven million, two hundred one thousand, two".