221211110102010 has 32 divisors (see below), whose sum is σ = 606750473423232. Its totient is φ = 50562539451840.

The previous prime is 221211110102009. The next prime is 221211110102029. The reversal of 221211110102010 is 10201011112122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526693119081 + ... + 526693119500.

It is an arithmetic number, because the mean of its divisors is an integer number (18960952294476).

Almost surely, 2^{221211110102010} is an apocalyptic number.

221211110102010 is an abundant number, since it is smaller than the sum of its proper divisors (385539363321222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221211110102010 is a wasteful number, since it uses less digits than its factorization.

221211110102010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053386238598.

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

Adding to 221211110102010 its reverse (10201011112122), we get a palindrome (231412121214132).

The spelling of 221211110102010 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred ten million, one hundred two thousand, ten".