1011420051253 has 4 divisors (see below), whose sum is σ = 1015019411148. Its totient is φ = 1007820691360.

The previous prime is 1011420051241. The next prime is 1011420051283. The reversal of 1011420051253 is 3521500241101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 437981887204 + 573438164049 = 661802^2 + 757257^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011420051253 - 2⁵ = 1011420051221 is a prime.

It is a super-2 number, since 2×1011420051253² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011420051223) 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, 1799679526 + ... + 1799680087.

It is an arithmetic number, because the mean of its divisors is an integer number (253754852787).

Almost surely, 2^{1011420051253} is an apocalyptic number.

It is an amenable number.

1011420051253 is a deficient number, since it is larger than the sum of its proper divisors (3599359895).

1011420051253 is an equidigital number, since it uses as much as digits as its factorization.

1011420051253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599359894.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 1011420051253 its reverse (3521500241101), we get a palindrome (4532920292354).

The spelling of 1011420051253 in words is "one trillion, eleven billion, four hundred twenty million, fifty-one thousand, two hundred fifty-three".