21122102 has 8 divisors (see below), whose sum is σ = 31710000. Its totient is φ = 10552104.

The previous prime is 21122099. The next prime is 21122111. The reversal of 21122102 is 20122112.

It is a happy number.

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

It is a super-2 number, since 2×21122102² = 892286385796808, which 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, 977 + ... + 6572.

It is an arithmetic number, because the mean of its divisors is an integer number (3963750).

Almost surely, 2^21122102 is an apocalyptic number.

21122102 is a deficient number, since it is larger than the sum of its proper divisors (10587898).

21122102 is a wasteful number, since it uses less digits than its factorization.

21122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8950.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 21122102 is about 4595.8788060609. The cubic root of 21122102 is about 276.4260991675.

Adding to 21122102 its reverse (20122112), we get a palindrome (41244214).

The spelling of 21122102 in words is "twenty-one million, one hundred twenty-two thousand, one hundred two".