10212202122221 has 8 divisors (see below), whose sum is σ = 11225626761888. Its totient is φ = 9212951254000.

The previous prime is 10212202122211. The next prime is 10212202122247. The reversal of 10212202122221 is 12222120221201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212202122221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212202122193 and 10212202122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212202122211) 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, 3543441350 + ... + 3543444231.

It is an arithmetic number, because the mean of its divisors is an integer number (1403203345236).

Almost surely, 2^{10212202122221} is an apocalyptic number.

10212202122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10212202122221 is a deficient number, since it is larger than the sum of its proper divisors (1013424639667).

10212202122221 is a wasteful number, since it uses less digits than its factorization.

10212202122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7086885723.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 10212202122221 its reverse (12222120221201), we get a palindrome (22434322343422).

The spelling of 10212202122221 in words is "ten trillion, two hundred twelve billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty-one".