1351551234021 has 16 divisors (see below), whose sum is σ = 1851323443200. Its totient is φ = 876573558000.

The previous prime is 1351551233941. The next prime is 1351551234041. The reversal of 1351551234021 is 1204321551531.

It is not a de Polignac number, because 1351551234021 - 2²⁶ = 1351484125157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351551234041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20838421 + ... + 20903178.

It is an arithmetic number, because the mean of its divisors is an integer number (115707715200).

Almost surely, 2^{1351551234021} is an apocalyptic number.

It is an amenable number.

1351551234021 is a deficient number, since it is larger than the sum of its proper divisors (499772209179).

1351551234021 is a wasteful number, since it uses less digits than its factorization.

1351551234021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41741896.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 1351551234021 its reverse (1204321551531), we get a palindrome (2555872785552).

The spelling of 1351551234021 in words is "one trillion, three hundred fifty-one billion, five hundred fifty-one million, two hundred thirty-four thousand, twenty-one".