2021254451234 has 8 divisors (see below), whose sum is σ = 3113824424988. Its totient is φ = 983312976240.

The previous prime is 2021254451233. The next prime is 2021254451243. The reversal of 2021254451234 is 4321544521202.

It can be written as a sum of positive squares in 2 ways, for example, as 2018397014209 + 2857437025 = 1420703^2 + 53455^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2021254451194 and 2021254451203.

It is not an unprimeable number, because it can be changed into a prime (2021254451233) 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, 13657124597 + ... + 13657124744.

Almost surely, 2^{2021254451234} is an apocalyptic number.

2021254451234 is a deficient number, since it is larger than the sum of its proper divisors (1092569973754).

2021254451234 is a wasteful number, since it uses less digits than its factorization.

2021254451234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27314249380.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 2021254451234 its reverse (4321544521202), we get a palindrome (6342798972436).

The spelling of 2021254451234 in words is "two trillion, twenty-one billion, two hundred fifty-four million, four hundred fifty-one thousand, two hundred thirty-four".