222121012011202 has 4 divisors (see below), whose sum is σ = 333181518016806. Its totient is φ = 111060506005600.

The previous prime is 222121012011193. The next prime is 222121012011209. The reversal of 222121012011202 is 202110210121222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 128297553576201 + 93823458435001 = 11326851^2 + 9686251^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222121012011202.

It is not an unprimeable number, because it can be changed into a prime (222121012011209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55530253002799 + ... + 55530253002802.

Almost surely, 2^{222121012011202} is an apocalyptic number.

222121012011202 is a deficient number, since it is larger than the sum of its proper divisors (111060506005604).

222121012011202 is a wasteful number, since it uses less digits than its factorization.

222121012011202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111060506005603.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222121012011202 its reverse (202110210121222), we get a palindrome (424231222132424).

The spelling of 222121012011202 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twelve million, eleven thousand, two hundred two".