102021120022 has 4 divisors (see below), whose sum is σ = 153031680036. Its totient is φ = 51010560010.

The previous prime is 102021119971. The next prime is 102021120023. The reversal of 102021120022 is 220021120201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220021120201 = 1549 ⋅142040749.

It is a junction number, because it is equal to n+sod(n) for n = 102021119984 and 102021120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021120023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505280004 + ... + 25505280007.

It is an arithmetic number, because the mean of its divisors is an integer number (38257920009).

Almost surely, 2^102021120022 is an apocalyptic number.

102021120022 is a deficient number, since it is larger than the sum of its proper divisors (51010560014).

102021120022 is an equidigital number, since it uses as much as digits as its factorization.

102021120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51010560013.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102021120022 its reverse (220021120201), we get a palindrome (322042240223).

The spelling of 102021120022 in words is "one hundred two billion, twenty-one million, one hundred twenty thousand, twenty-two".