1211022021110 has 64 divisors (see below), whose sum is σ = 2383226496000. Its totient is φ = 439405948800.

The previous prime is 1211022021061. The next prime is 1211022021151. The reversal of 1211022021110 is 111202201121.

It is a super-2 number, since 2×1211022021110² (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 31 ways as a sum of consecutive naturals, for example, 140828591 + ... + 140837189.

It is an arithmetic number, because the mean of its divisors is an integer number (37237914000).

Almost surely, 2^{1211022021110} is an apocalyptic number.

1211022021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211022021110 is a deficient number, since it is larger than the sum of its proper divisors (1172204474890).

1211022021110 is a wasteful number, since it uses less digits than its factorization.

1211022021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211022021110 its reverse (111202201121), we get a palindrome (1322224222231).

The spelling of 1211022021110 in words is "one trillion, two hundred eleven billion, twenty-two million, twenty-one thousand, one hundred ten".