20211212021102 has 4 divisors (see below), whose sum is σ = 30316818031656. Its totient is φ = 10105606010550.

The previous prime is 20211212021083. The next prime is 20211212021113. The reversal of 20211212021102 is 20112021211202.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052803005274 + ... + 5052803005277.

It is an arithmetic number, because the mean of its divisors is an integer number (7579204507914).

Almost surely, 2^{20211212021102} is an apocalyptic number.

20211212021102 is a deficient number, since it is larger than the sum of its proper divisors (10105606010554).

20211212021102 is a wasteful number, since it uses less digits than its factorization.

20211212021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105606010553.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20211212021102 its reverse (20112021211202), we get a palindrome (40323233232304).

The spelling of 20211212021102 in words is "twenty trillion, two hundred eleven billion, two hundred twelve million, twenty-one thousand, one hundred two".