1211011101102 has 32 divisors (see below), whose sum is σ = 2674039858560. Its totient is φ = 362551697120.

The previous prime is 1211011101067. The next prime is 1211011101137. The reversal of 1211011101102 is 2011011101121.

It is an interprime number because it is at equal distance from previous prime (1211011101067) and next prime (1211011101137).

It is a super-2 number, since 2×1211011101102² (a number of 25 digits) contains 22 as substring.

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, 110528577 + ... + 110539532.

It is an arithmetic number, because the mean of its divisors is an integer number (83563745580).

Almost surely, 2^{1211011101102} is an apocalyptic number.

1211011101102 is an abundant number, since it is smaller than the sum of its proper divisors (1463028757458).

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

1211011101102 is a wasteful number, since it uses less digits than its factorization.

1211011101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221068208.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1211011101102 its reverse (2011011101121), we get a palindrome (3222022202223).

The spelling of 1211011101102 in words is "one trillion, two hundred eleven billion, eleven million, one hundred one thousand, one hundred two".