22121230220342 has 32 divisors (see below), whose sum is σ = 36362909767680. Its totient is φ = 10009487517120.

The previous prime is 22121230220339. The next prime is 22121230220351. The reversal of 22121230220342 is 24302203212122.

It is a super-2 number, since 2×22121230220342² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2954459 + ... + 7278137.

It is an arithmetic number, because the mean of its divisors is an integer number (1136340930240).

Almost surely, 2^{22121230220342} is an apocalyptic number.

22121230220342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121230220342 is a deficient number, since it is larger than the sum of its proper divisors (14241679547338).

22121230220342 is a wasteful number, since it uses less digits than its factorization.

22121230220342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324748.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 22121230220342 its reverse (24302203212122), we get a palindrome (46423433432464).

The spelling of 22121230220342 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred thirty million, two hundred twenty thousand, three hundred forty-two".