101020001221123 has 4 divisors (see below), whose sum is σ = 103169362949280. Its totient is φ = 98870639492968.

The previous prime is 101020001221063. The next prime is 101020001221133. The reversal of 101020001221123 is 321122100020101.

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 101020001221123 - 2¹³ = 101020001212931 is a prime.

It is a super-2 number, since 2×101020001221123² (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 = 101020001221097 and 101020001221106.

It is not an unprimeable number, because it can be changed into a prime (101020001221133) 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, 1074680864008 + ... + 1074680864101.

It is an arithmetic number, because the mean of its divisors is an integer number (25792340737320).

Almost surely, 2^{101020001221123} is an apocalyptic number.

101020001221123 is a deficient number, since it is larger than the sum of its proper divisors (2149361728157).

101020001221123 is an equidigital number, since it uses as much as digits as its factorization.

101020001221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149361728156.

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

Adding to 101020001221123 its reverse (321122100020101), we get a palindrome (422142101241224).

The spelling of 101020001221123 in words is "one hundred one trillion, twenty billion, one million, two hundred twenty-one thousand, one hundred twenty-three".