20211010212102 has 48 divisors (see below), whose sum is σ = 41546569559040. Its totient is φ = 6554522191392.

The previous prime is 20211010212091. The next prime is 20211010212109. The reversal of 20211010212102 is 20121201011202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211010212109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153692143 + ... + 153823589.

It is an arithmetic number, because the mean of its divisors is an integer number (865553532480).

Almost surely, 2^{20211010212102} is an apocalyptic number.

20211010212102 is an abundant number, since it is smaller than the sum of its proper divisors (21335559346938).

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

20211010212102 is a wasteful number, since it uses less digits than its factorization.

20211010212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150245 (or 150208 counting only the distinct ones).

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

Adding to 20211010212102 its reverse (20121201011202), we get a palindrome (40332211223304).

The spelling of 20211010212102 in words is "twenty trillion, two hundred eleven billion, ten million, two hundred twelve thousand, one hundred two".