1220212100101 has 8 divisors (see below), whose sum is σ = 1292614899680. Its totient is φ = 1148627411568.

The previous prime is 1220212100011. The next prime is 1220212100113. The reversal of 1220212100101 is 1010012120221.

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-1220212100101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220212100131) 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, 204524691 + ... + 204530656.

It is an arithmetic number, because the mean of its divisors is an integer number (161576862460).

Almost surely, 2^{1220212100101} is an apocalyptic number.

It is an amenable number.

1220212100101 is a deficient number, since it is larger than the sum of its proper divisors (72402799579).

1220212100101 is a wasteful number, since it uses less digits than its factorization.

1220212100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409055523.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220212100101 its reverse (1010012120221), we get a palindrome (2230224220322).

The spelling of 1220212100101 in words is "one trillion, two hundred twenty billion, two hundred twelve million, one hundred thousand, one hundred one".