21022212123007 has 8 divisors (see below), whose sum is σ = 21170584861776. Its totient is φ = 20874355464192.

The previous prime is 21022212123001. The next prime is 21022212123049. The reversal of 21022212123007 is 70032121222012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022212123007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022212123001) 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, 128938233 + ... + 129101170.

It is an arithmetic number, because the mean of its divisors is an integer number (2646323107722).

Almost surely, 2^{21022212123007} is an apocalyptic number.

21022212123007 is a deficient number, since it is larger than the sum of its proper divisors (148372738769).

21022212123007 is a wasteful number, since it uses less digits than its factorization.

21022212123007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258039977.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 21022212123007 its reverse (70032121222012), we get a palindrome (91054333345019).

The spelling of 21022212123007 in words is "twenty-one trillion, twenty-two billion, two hundred twelve million, one hundred twenty-three thousand, seven".