10212112121123 has 16 divisors (see below), whose sum is σ = 11400088444800. Its totient is φ = 9067422631680.

The previous prime is 10212112121089. The next prime is 10212112121129. The reversal of 10212112121123 is 32112121121201.

It is not a de Polignac number, because 10212112121123 - 2⁶ = 10212112121059 is a prime.

It is a super-2 number, since 2×10212112121123² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10212112121095 and 10212112121104.

It is not an unprimeable number, because it can be changed into a prime (10212112121129) 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, 10097948 + ... + 11063126.

It is an arithmetic number, because the mean of its divisors is an integer number (712505527800).

Almost surely, 2^{10212112121123} is an apocalyptic number.

10212112121123 is a deficient number, since it is larger than the sum of its proper divisors (1187976323677).

10212112121123 is a wasteful number, since it uses less digits than its factorization.

10212112121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987602.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 10212112121123 its reverse (32112121121201), we get a palindrome (42324233242324).

The spelling of 10212112121123 in words is "ten trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twenty-three".