10211021021121 has 32 divisors (see below), whose sum is σ = 13783612635648. Its totient is φ = 6723525070080.

The previous prime is 10211021021087. The next prime is 10211021021183. The reversal of 10211021021121 is 12112012011201.

It is a happy number.

10211021021121 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 10211021021121 - 2¹⁸ = 10211020758977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10211021021121.

It is not an unprimeable number, because it can be changed into a prime (10211021001121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54833656 + ... + 55019558.

It is an arithmetic number, because the mean of its divisors is an integer number (430737894864).

Almost surely, 2^{10211021021121} is an apocalyptic number.

It is an amenable number.

10211021021121 is a deficient number, since it is larger than the sum of its proper divisors (3572591614527).

10211021021121 is a wasteful number, since it uses less digits than its factorization.

10211021021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186761.

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

Adding to 10211021021121 its reverse (12112012011201), we get a palindrome (22323033032322).

The spelling of 10211021021121 in words is "ten trillion, two hundred eleven billion, twenty-one million, twenty-one thousand, one hundred twenty-one".