101020121211021 has 16 divisors (see below), whose sum is σ = 134721708485184. Its totient is φ = 67332641935104.

The previous prime is 101020121211013. The next prime is 101020121211041. The reversal of 101020121211021 is 120112121020101.

It is a happy number.

It is not a de Polignac number, because 101020121211021 - 2³ = 101020121211013 is a prime.

It is a super-2 number, since 2×101020121211021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020121211041) 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, 356937450 + ... + 357220356.

It is an arithmetic number, because the mean of its divisors is an integer number (8420106780324).

Almost surely, 2^{101020121211021} is an apocalyptic number.

It is an amenable number.

101020121211021 is a deficient number, since it is larger than the sum of its proper divisors (33701587274163).

101020121211021 is a wasteful number, since it uses less digits than its factorization.

101020121211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307420.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101020121211021 its reverse (120112121020101), we get a palindrome (221132242231122).

The spelling of 101020121211021 in words is "one hundred one trillion, twenty billion, one hundred twenty-one million, two hundred eleven thousand, twenty-one".