2123022212421 has 8 divisors (see below), whose sum is σ = 3088032309024. Its totient is φ = 1286680128720.

The previous prime is 2123022212417. The next prime is 2123022212473. The reversal of 2123022212421 is 1242122203212.

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

It is not a de Polignac number, because 2123022212421 - 2² = 2123022212417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123022212391 and 2123022212400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123022212621) 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, 32167003186 + ... + 32167003251.

It is an arithmetic number, because the mean of its divisors is an integer number (386004038628).

Almost surely, 2^{2123022212421} is an apocalyptic number.

It is an amenable number.

2123022212421 is a deficient number, since it is larger than the sum of its proper divisors (965010096603).

2123022212421 is a wasteful number, since it uses less digits than its factorization.

2123022212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64334006451.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 2123022212421 its reverse (1242122203212), we get a palindrome (3365144415633).

The spelling of 2123022212421 in words is "two trillion, one hundred twenty-three billion, twenty-two million, two hundred twelve thousand, four hundred twenty-one".