122150010721 has 4 divisors (see below), whose sum is σ = 122151895344. Its totient is φ = 122148126100.

The previous prime is 122150010701. The next prime is 122150010743. The reversal of 122150010721 is 127010051221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 127010051221 = 2281 ⋅55681741.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122150010721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122150010692 and 122150010701.

It is not an unprimeable number, because it can be changed into a prime (122150010701) 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, 841495 + ... + 975916.

It is an arithmetic number, because the mean of its divisors is an integer number (30537973836).

Almost surely, 2^122150010721 is an apocalyptic number.

It is an amenable number.

122150010721 is a deficient number, since it is larger than the sum of its proper divisors (1884623).

122150010721 is an equidigital number, since it uses as much as digits as its factorization.

122150010721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884622.

The product of its (nonzero) digits is 280, while the sum is 22.

Adding to 122150010721 its reverse (127010051221), we get a palindrome (249160061942).

The spelling of 122150010721 in words is "one hundred twenty-two billion, one hundred fifty million, ten thousand, seven hundred twenty-one".