221212010201002 has 4 divisors (see below), whose sum is σ = 331818015301506. Its totient is φ = 110606005100500.

The previous prime is 221212010200919. The next prime is 221212010201029. The reversal of 221212010201002 is 200102010212122.

It is a happy number.

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., 221210263713321 + 1746487681 = 14873139^2 + 41791^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55303002550249 + ... + 55303002550252.

Almost surely, 2^{221212010201002} is an apocalyptic number.

221212010201002 is a deficient number, since it is larger than the sum of its proper divisors (110606005100504).

221212010201002 is a wasteful number, since it uses less digits than its factorization.

221212010201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110606005100503.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221212010201002 its reverse (200102010212122), we get a palindrome (421314020413124).

The spelling of 221212010201002 in words is "two hundred twenty-one trillion, two hundred twelve billion, ten million, two hundred one thousand, two".