213210101131123 has 2 divisors, whose sum is σ = 213210101131124. Its totient is φ = 213210101131122.

The previous prime is 213210101131117. The next prime is 213210101131127. The reversal of 213210101131123 is 321131101012312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213210101131123 is a prime.

It is a super-2 number, since 2×213210101131123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213210101131094 and 213210101131103.

It is not a weakly prime, because it can be changed into another prime (213210101131127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106605050565561 + 106605050565562.

It is an arithmetic number, because the mean of its divisors is an integer number (106605050565562).

Almost surely, 2^{213210101131123} is an apocalyptic number.

213210101131123 is a deficient number, since it is larger than the sum of its proper divisors (1).

213210101131123 is an equidigital number, since it uses as much as digits as its factorization.

213210101131123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 213210101131123 its reverse (321131101012312), we get a palindrome (534341202143435).

The spelling of 213210101131123 in words is "two hundred thirteen trillion, two hundred ten billion, one hundred one million, one hundred thirty-one thousand, one hundred twenty-three".