20421121265114 has 8 divisors (see below), whose sum is σ = 30641347947540. Its totient is φ = 10207338615936.

The previous prime is 20421121265113. The next prime is 20421121265119. The reversal of 20421121265114 is 41156212112402.

It can be written as a sum of positive squares in 2 ways, for example, as 18808051080625 + 1613070184489 = 4336825^2 + 1270067^2 .

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

It is a super-3 number, since 3×20421121265114³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20421121265113) 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, 1611000389 + ... + 1611013064.

Almost surely, 2^{20421121265114} is an apocalyptic number.

20421121265114 is a deficient number, since it is larger than the sum of its proper divisors (10220226682426).

20421121265114 is a wasteful number, since it uses less digits than its factorization.

20421121265114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222016624.

The product of its (nonzero) digits is 7680, while the sum is 32.

Adding to 20421121265114 its reverse (41156212112402), we get a palindrome (61577333377516).

The spelling of 20421121265114 in words is "twenty trillion, four hundred twenty-one billion, one hundred twenty-one million, two hundred sixty-five thousand, one hundred fourteen".