102120222121111 has 8 divisors (see below), whose sum is σ = 103187233500624. Its totient is φ = 101053501059840.

The previous prime is 102120222121067. The next prime is 102120222121117. The reversal of 102120222121111 is 111121222021201.

It is a happy number.

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

It is not a de Polignac number, because 102120222121111 - 2⁴⁵ = 66935850032279 is a prime.

It is a super-3 number, since 3×102120222121111³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120222121117) 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, 71872345 + ... + 73279426.

It is an arithmetic number, because the mean of its divisors is an integer number (12898404187578).

Almost surely, 2^{102120222121111} is an apocalyptic number.

102120222121111 is a deficient number, since it is larger than the sum of its proper divisors (1067011379513).

102120222121111 is an equidigital number, since it uses as much as digits as its factorization.

102120222121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145159121.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102120222121111 its reverse (111121222021201), we get a palindrome (213241444142312).

The spelling of 102120222121111 in words is "one hundred two trillion, one hundred twenty billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred eleven".