102011210101221 has 8 divisors (see below), whose sum is σ = 143173628212320. Its totient is φ = 64428132695472.

The previous prime is 102011210101187. The next prime is 102011210101231. The reversal of 102011210101221 is 122101012110201.

It is a happy number.

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

It is not a de Polignac number, because 102011210101221 - 2¹⁴ = 102011210084837 is a prime.

It is a super-4 number, since 4×102011210101221⁴ (a number of 57 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102011210101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011210101231) 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, 894835176270 + ... + 894835176383.

It is an arithmetic number, because the mean of its divisors is an integer number (17896703526540).

Almost surely, 2^{102011210101221} is an apocalyptic number.

It is an amenable number.

102011210101221 is a deficient number, since it is larger than the sum of its proper divisors (41162418111099).

102011210101221 is a wasteful number, since it uses less digits than its factorization.

102011210101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789670352675.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102011210101221 its reverse (122101012110201), we get a palindrome (224112222211422).

The spelling of 102011210101221 in words is "one hundred two trillion, eleven billion, two hundred ten million, one hundred one thousand, two hundred twenty-one".