1211122220102 has 8 divisors (see below), whose sum is σ = 1817103191376. Its totient is φ = 605421156312.

The previous prime is 1211122220069. The next prime is 1211122220131. The reversal of 1211122220102 is 2010222211121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69966053 + ... + 69983360.

It is an arithmetic number, because the mean of its divisors is an integer number (227137898922).

Almost surely, 2^{1211122220102} is an apocalyptic number.

1211122220102 is a deficient number, since it is larger than the sum of its proper divisors (605980971274).

1211122220102 is a wasteful number, since it uses less digits than its factorization.

1211122220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139953742.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211122220102 its reverse (2010222211121), we get a palindrome (3221344431223).

The spelling of 1211122220102 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand, one hundred two".