21020201212022 has 4 divisors (see below), whose sum is σ = 31530301818036. Its totient is φ = 10510100606010.

The previous prime is 21020201211991. The next prime is 21020201212069. The reversal of 21020201212022 is 22021210202012.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5255050303004 + ... + 5255050303007.

It is an arithmetic number, because the mean of its divisors is an integer number (7882575454509).

Almost surely, 2^{21020201212022} is an apocalyptic number.

21020201212022 is a deficient number, since it is larger than the sum of its proper divisors (10510100606014).

21020201212022 is a wasteful number, since it uses less digits than its factorization.

21020201212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10510100606013.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21020201212022 its reverse (22021210202012), we get a palindrome (43041411414034).

The spelling of 21020201212022 in words is "twenty-one trillion, twenty billion, two hundred one million, two hundred twelve thousand, twenty-two".