21012023012101 has 32 divisors (see below), whose sum is σ = 24671483781120. Its totient is φ = 17681302348800.

The previous prime is 21012023012051. The next prime is 21012023012131. The reversal of 21012023012101 is 10121032021012.

It is a cyclic number.

It is not a de Polignac number, because 21012023012101 - 2¹⁷ = 21012022881029 is a prime.

It is a super-2 number, since 2×21012023012101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012023012131) 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, 96245895 + ... + 96463963.

It is an arithmetic number, because the mean of its divisors is an integer number (770983868160).

Almost surely, 2^{21012023012101} is an apocalyptic number.

It is an amenable number.

21012023012101 is a deficient number, since it is larger than the sum of its proper divisors (3659460769019).

21012023012101 is a wasteful number, since it uses less digits than its factorization.

21012023012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226605.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21012023012101 its reverse (10121032021012), we get a palindrome (31133055033113).

The spelling of 21012023012101 in words is "twenty-one trillion, twelve billion, twenty-three million, twelve thousand, one hundred one".