21232211201242 has 16 divisors (see below), whose sum is σ = 32449374385920. Its totient is φ = 10415754874512.

The previous prime is 21232211201213. The next prime is 21232211201249. The reversal of 21232211201242 is 24210211223212.

It is not an unprimeable number, because it can be changed into a prime (21232211201249) 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, 42089803 + ... + 42591265.

It is an arithmetic number, because the mean of its divisors is an integer number (2028085899120).

Almost surely, 2^{21232211201242} is an apocalyptic number.

21232211201242 is a deficient number, since it is larger than the sum of its proper divisors (11217163184678).

21232211201242 is a wasteful number, since it uses less digits than its factorization.

21232211201242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900957.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21232211201242 its reverse (24210211223212), we get a palindrome (45442422424454).

The spelling of 21232211201242 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred eleven million, two hundred one thousand, two hundred forty-two".