30220021121123 has 4 divisors (see below), whose sum is σ = 30220064338080. Its totient is φ = 30219977904168.

The previous prime is 30220021121119. The next prime is 30220021121197. The reversal of 30220021121123 is 32112112002203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30220021121123 - 2² = 30220021121119 is a prime.

It is a super-2 number, since 2×30220021121123² (a number of 28 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 = 30220021121095 and 30220021121104.

It is not an unprimeable number, because it can be changed into a prime (30220021121923) 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, 20542040 + ... + 21963957.

It is an arithmetic number, because the mean of its divisors is an integer number (7555016084520).

Almost surely, 2^{30220021121123} is an apocalyptic number.

30220021121123 is a deficient number, since it is larger than the sum of its proper divisors (43216957).

30220021121123 is an equidigital number, since it uses as much as digits as its factorization.

30220021121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43216956.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 30220021121123 its reverse (32112112002203), we get a palindrome (62332133123326).

The spelling of 30220021121123 in words is "thirty trillion, two hundred twenty billion, twenty-one million, one hundred twenty-one thousand, one hundred twenty-three".