201120101212021 has 2 divisors, whose sum is σ = 201120101212022. Its totient is φ = 201120101212020.

The previous prime is 201120101211971. The next prime is 201120101212091. The reversal of 201120101212021 is 120212101021102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196651232051121 + 4468869160900 = 14023239^2 + 2113970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201120101212021 is a prime.

It is a super-2 number, since 2×201120101212021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201120101211986 and 201120101212004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201120101212091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560050606010 + 100560050606011.

It is an arithmetic number, because the mean of its divisors is an integer number (100560050606011).

Almost surely, 2^{201120101212021} is an apocalyptic number.

It is an amenable number.

201120101212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201120101212021 is an equidigital number, since it uses as much as digits as its factorization.

201120101212021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201120101212021 its reverse (120212101021102), we get a palindrome (321332202233123).

The spelling of 201120101212021 in words is "two hundred one trillion, one hundred twenty billion, one hundred one million, two hundred twelve thousand, twenty-one".