22121011300042 has 8 divisors (see below), whose sum is σ = 35133370888356. Its totient is φ = 10409887670592.

The previous prime is 22121011299979. The next prime is 22121011300097. The reversal of 22121011300042 is 24000311012122.

It can be written as a sum of positive squares in 2 ways, for example, as 22074765227641 + 46246072401 = 4698379^2 + 215049^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22121011299992 and 22121011300019.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325308989673 + ... + 325308989740.

Almost surely, 2^{22121011300042} is an apocalyptic number.

22121011300042 is a deficient number, since it is larger than the sum of its proper divisors (13012359588314).

22121011300042 is a wasteful number, since it uses less digits than its factorization.

22121011300042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650617979432.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22121011300042 its reverse (24000311012122), we get a palindrome (46121322312164).

The spelling of 22121011300042 in words is "twenty-two trillion, one hundred twenty-one billion, eleven million, three hundred thousand, forty-two".