2102121100222 has 32 divisors (see below), whose sum is σ = 3922345262304. Its totient is φ = 830125977600.

The previous prime is 2102121100207. The next prime is 2102121100249. The reversal of 2102121100222 is 2220011212012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2102121100196 and 2102121100205.

It is a congruent number.

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, 216173779 + ... + 216183502.

It is an arithmetic number, because the mean of its divisors is an integer number (122573289447).

Almost surely, 2^{2102121100222} is an apocalyptic number.

2102121100222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2102121100222 is a deficient number, since it is larger than the sum of its proper divisors (1820224162082).

2102121100222 is a wasteful number, since it uses less digits than its factorization.

2102121100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432357324.

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

Adding to 2102121100222 its reverse (2220011212012), we get a palindrome (4322132312234).

The spelling of 2102121100222 in words is "two trillion, one hundred two billion, one hundred twenty-one million, one hundred thousand, two hundred twenty-two".