1020001201311 has 4 divisors (see below), whose sum is σ = 1360001601752. Its totient is φ = 680000800872.

The previous prime is 1020001201277. The next prime is 1020001201327. The reversal of 1020001201311 is 1131021000201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1020001201311 - 2⁷ = 1020001201183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020001201361) 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, 170000200216 + ... + 170000200221.

It is an arithmetic number, because the mean of its divisors is an integer number (340000400438).

Almost surely, 2^{1020001201311} is an apocalyptic number.

1020001201311 is a deficient number, since it is larger than the sum of its proper divisors (340000400441).

1020001201311 is an equidigital number, since it uses as much as digits as its factorization.

1020001201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340000400440.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1020001201311 its reverse (1131021000201), we get a palindrome (2151022201512).

The spelling of 1020001201311 in words is "one trillion, twenty billion, one million, two hundred one thousand, three hundred eleven".