1211012011210 has 16 divisors (see below), whose sum is σ = 2183535125856. Its totient is φ = 483579581008.

The previous prime is 1211012011199. The next prime is 1211012011277. The reversal of 1211012011210 is 121102101121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103146772 + ... + 103158511.

It is an arithmetic number, because the mean of its divisors is an integer number (136470945366).

Almost surely, 2^{1211012011210} is an apocalyptic number.

1211012011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211012011210 is a deficient number, since it is larger than the sum of its proper divisors (972523114646).

1211012011210 is a wasteful number, since it uses less digits than its factorization.

1211012011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206305877.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211012011210 its reverse (121102101121), we get a palindrome (1332114112331).

The spelling of 1211012011210 in words is "one trillion, two hundred eleven billion, twelve million, eleven thousand, two hundred ten".