122021202106 has 4 divisors (see below), whose sum is σ = 183031803162. Its totient is φ = 61010601052.

The previous prime is 122021202103. The next prime is 122021202131. The reversal of 122021202106 is 601202120221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601202120221 = 797 ⋅754331393.

It can be written as a sum of positive squares in only one way, i.e., 96103100025 + 25918102081 = 310005^2 + 160991^2 .

It is not an unprimeable number, because it can be changed into a prime (122021202101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30505300525 + ... + 30505300528.

Almost surely, 2^122021202106 is an apocalyptic number.

122021202106 is a deficient number, since it is larger than the sum of its proper divisors (61010601056).

122021202106 is an equidigital number, since it uses as much as digits as its factorization.

122021202106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61010601055.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 122021202106 its reverse (601202120221), we get a palindrome (723223322327).

The spelling of 122021202106 in words is "one hundred twenty-two billion, twenty-one million, two hundred two thousand, one hundred six".