21120201102021 has 8 divisors (see below), whose sum is σ = 32183163584064. Its totient is φ = 12068686344000.

The previous prime is 21120201101999. The next prime is 21120201102043. The reversal of 21120201102021 is 12020110202112.

It is an interprime number because it is at equal distance from previous prime (21120201101999) and next prime (21120201102043).

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

It is not a de Polignac number, because 21120201102021 - 2¹¹ = 21120201099973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120201102521) 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, 502861930980 + ... + 502861931021.

It is an arithmetic number, because the mean of its divisors is an integer number (4022895448008).

Almost surely, 2^{21120201102021} is an apocalyptic number.

21120201102021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21120201102021 is a deficient number, since it is larger than the sum of its proper divisors (11062962482043).

21120201102021 is a wasteful number, since it uses less digits than its factorization.

21120201102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005723862011.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21120201102021 its reverse (12020110202112), we get a palindrome (33140311304133).

The spelling of 21120201102021 in words is "twenty-one trillion, one hundred twenty billion, two hundred one million, one hundred two thousand, twenty-one".