1011421506351 has 4 divisors (see below), whose sum is σ = 1348562008472. Its totient is φ = 674281004232.

The previous prime is 1011421506313. The next prime is 1011421506367. The reversal of 1011421506351 is 1536051241101.

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

It is not a de Polignac number, because 1011421506351 - 2⁹ = 1011421505839 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 (1011421506391) 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, 168570251056 + ... + 168570251061.

It is an arithmetic number, because the mean of its divisors is an integer number (337140502118).

Almost surely, 2^{1011421506351} is an apocalyptic number.

1011421506351 is a deficient number, since it is larger than the sum of its proper divisors (337140502121).

1011421506351 is an equidigital number, since it uses as much as digits as its factorization.

1011421506351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337140502120.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 1011421506351 its reverse (1536051241101), we get a palindrome (2547472747452).

The spelling of 1011421506351 in words is "one trillion, eleven billion, four hundred twenty-one million, five hundred six thousand, three hundred fifty-one".