21052300202354 has 4 divisors (see below), whose sum is σ = 31578450303534. Its totient is φ = 10526150101176.

The previous prime is 21052300202317. The next prime is 21052300202411. The reversal of 21052300202354 is 45320200325012.

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

It can be written as a sum of positive squares in only one way, i.e., 11946251632225 + 9106048570129 = 3456335^2 + 3017623^2 .

It is a super-3 number, since 3×21052300202354³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5263075050587 + ... + 5263075050590.

Almost surely, 2^{21052300202354} is an apocalyptic number.

21052300202354 is a deficient number, since it is larger than the sum of its proper divisors (10526150101180).

21052300202354 is a wasteful number, since it uses less digits than its factorization.

21052300202354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526150101179.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 21052300202354 its reverse (45320200325012), we get a palindrome (66372500527366).

The spelling of 21052300202354 in words is "twenty-one trillion, fifty-two billion, three hundred million, two hundred two thousand, three hundred fifty-four".