121102102030031 has 4 divisors (see below), whose sum is σ = 123154680030600. Its totient is φ = 119049524029464.

The previous prime is 121102102030027. The next prime is 121102102030037. The reversal of 121102102030031 is 130030201201121.

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

It is a cyclic number.

It is not a de Polignac number, because 121102102030031 - 2² = 121102102030027 is a prime.

It is a super-2 number, since 2×121102102030031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121102102029991 and 121102102030009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102102030037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026289000196 + ... + 1026289000313.

It is an arithmetic number, because the mean of its divisors is an integer number (30788670007650).

Almost surely, 2^{121102102030031} is an apocalyptic number.

121102102030031 is a deficient number, since it is larger than the sum of its proper divisors (2052578000569).

121102102030031 is an equidigital number, since it uses as much as digits as its factorization.

121102102030031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052578000568.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121102102030031 its reverse (130030201201121), we get a palindrome (251132303231152).

The spelling of 121102102030031 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred two million, thirty thousand, thirty-one".