201211021102 has 24 divisors (see below), whose sum is σ = 373507529616. Its totient is φ = 79599963456.

The previous prime is 201211021087. The next prime is 201211021147. The reversal of 201211021102 is 201120112102.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42518983 + ... + 42523714.

It is an arithmetic number, because the mean of its divisors is an integer number (15562813734).

Almost surely, 2^201211021102 is an apocalyptic number.

201211021102 is a deficient number, since it is larger than the sum of its proper divisors (172296508514).

201211021102 is a wasteful number, since it uses less digits than its factorization.

201211021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85042732 (or 85042719 counting only the distinct ones).

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

Adding to 201211021102 its reverse (201120112102), we get a palindrome (402331133204).

The spelling of 201211021102 in words is "two hundred one billion, two hundred eleven million, twenty-one thousand, one hundred two".