102021212021123 has 8 divisors (see below), whose sum is σ = 102132616646400. Its totient is φ = 101909839656960.

The previous prime is 102021212021119. The next prime is 102021212021129. The reversal of 102021212021123 is 321120212120201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102021212021123 - 2² = 102021212021119 is a prime.

It is a super-2 number, since 2×102021212021123² (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 = 102021212021095 and 102021212021104.

It is not an unprimeable number, because it can be changed into a prime (102021212021129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1734398 + ... + 14389251.

It is an arithmetic number, because the mean of its divisors is an integer number (12766577080800).

Almost surely, 2^{102021212021123} is an apocalyptic number.

102021212021123 is a deficient number, since it is larger than the sum of its proper divisors (111404625277).

102021212021123 is a wasteful number, since it uses less digits than its factorization.

102021212021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16130557.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 102021212021123 its reverse (321120212120201), we get a palindrome (423141424141324).

The spelling of 102021212021123 in words is "one hundred two trillion, twenty-one billion, two hundred twelve million, twenty-one thousand, one hundred twenty-three".