2121102101212 has 48 divisors (see below), whose sum is σ = 3947891935680. Its totient is φ = 993694924800.

The previous prime is 2121102101179. The next prime is 2121102101213. The reversal of 2121102101212 is 2121012011212.

It is a super-2 number, since 2×2121102101212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121102101213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53585364 + ... + 53624932.

It is an arithmetic number, because the mean of its divisors is an integer number (82247748660).

Almost surely, 2^{2121102101212} is an apocalyptic number.

It is an amenable number.

2121102101212 is a deficient number, since it is larger than the sum of its proper divisors (1826789834468).

2121102101212 is a wasteful number, since it uses less digits than its factorization.

2121102101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43102 (or 43100 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121102101212 its reverse (2121012011212), we get a palindrome (4242114112424).

The spelling of 2121102101212 in words is "two trillion, one hundred twenty-one billion, one hundred two million, one hundred one thousand, two hundred twelve".