1021451226653 has 8 divisors (see below), whose sum is σ = 1200026616096. Its totient is φ = 857161868400.

The previous prime is 1021451226619. The next prime is 1021451226721. The reversal of 1021451226653 is 3566221541201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021451226653 - 2¹⁰ = 1021451225629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021451226253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3571507643 + ... + 3571507928.

It is an arithmetic number, because the mean of its divisors is an integer number (150003327012).

Almost surely, 2^{1021451226653} is an apocalyptic number.

1021451226653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1021451226653 is a deficient number, since it is larger than the sum of its proper divisors (178575389443).

1021451226653 is a wasteful number, since it uses less digits than its factorization.

1021451226653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7143015595.

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 1021451226653 its reverse (3566221541201), we get a palindrome (4587672767854).

The spelling of 1021451226653 in words is "one trillion, twenty-one billion, four hundred fifty-one million, two hundred twenty-six thousand, six hundred fifty-three".