212111132102 has 4 divisors (see below), whose sum is σ = 318166698156. Its totient is φ = 106055566050.

The previous prime is 212111132099. The next prime is 212111132113. The reversal of 212111132102 is 201231111212.

It is a happy number.

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

It is a super-2 number, since 2×212111132102² (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, 53027783024 + ... + 53027783027.

It is an arithmetic number, because the mean of its divisors is an integer number (79541674539).

Almost surely, 2^212111132102 is an apocalyptic number.

212111132102 is a deficient number, since it is larger than the sum of its proper divisors (106055566054).

212111132102 is a wasteful number, since it uses less digits than its factorization.

212111132102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106055566053.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 212111132102 its reverse (201231111212), we get a palindrome (413342243314).

The spelling of 212111132102 in words is "two hundred twelve billion, one hundred eleven million, one hundred thirty-two thousand, one hundred two".