211121212202031 has 16 divisors (see below), whose sum is σ = 289134439333344. Its totient is φ = 136928559360384.

The previous prime is 211121212202009. The next prime is 211121212202051. The reversal of 211121212202031 is 130202212121112.

211121212202031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211121212202031 - 2⁶ = 211121212201967 is a prime.

It is a super-2 number, since 2×211121212202031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211121212201989 and 211121212202007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121212202051) 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, 102655236 + ... + 104691641.

It is an arithmetic number, because the mean of its divisors is an integer number (18070902458334).

Almost surely, 2^{211121212202031} is an apocalyptic number.

211121212202031 is a deficient number, since it is larger than the sum of its proper divisors (78013227131313).

211121212202031 is a wasteful number, since it uses less digits than its factorization.

211121212202031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207356090.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 211121212202031 its reverse (130202212121112), we get a palindrome (341323424323143).

The spelling of 211121212202031 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred two thousand, thirty-one".