212101021102 has 4 divisors (see below), whose sum is σ = 318151531656. Its totient is φ = 106050510550.

The previous prime is 212101021061. The next prime is 212101021133. The reversal of 212101021102 is 201120101212.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×212101021102² (a number of 23 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 as a sum of consecutive naturals, namely, 53025255274 + ... + 53025255277.

It is an arithmetic number, because the mean of its divisors is an integer number (79537882914).

Almost surely, 2^212101021102 is an apocalyptic number.

212101021102 is a deficient number, since it is larger than the sum of its proper divisors (106050510554).

212101021102 is a wasteful number, since it uses less digits than its factorization.

212101021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106050510553.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212101021102 its reverse (201120101212), we get a palindrome (413221122314).

The spelling of 212101021102 in words is "two hundred twelve billion, one hundred one million, twenty-one thousand, one hundred two".