21021022011102 has 8 divisors (see below), whose sum is σ = 42042044022216. Its totient is φ = 7007007337032.

The previous prime is 21021022011071. The next prime is 21021022011131. The reversal of 21021022011102 is 20111022012012.

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

21021022011102 is an admirable number.

It is a super-2 number, since 2×21021022011102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751751834253 + ... + 1751751834264.

It is an arithmetic number, because the mean of its divisors is an integer number (5255255502777).

Almost surely, 2^{21021022011102} is an apocalyptic number.

21021022011102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21021022011102 is a wasteful number, since it uses less digits than its factorization.

21021022011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503503668522.

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

Adding to 21021022011102 its reverse (20111022012012), we get a palindrome (41132044023114).

The spelling of 21021022011102 in words is "twenty-one trillion, twenty-one billion, twenty-two million, eleven thousand, one hundred two".