1210121101012 has 24 divisors (see below), whose sum is σ = 2232071137800. Its totient is φ = 573173817216.

The previous prime is 1210121100971. The next prime is 1210121101031. The reversal of 1210121101012 is 2101011210121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 726200526276 + 483920574736 = 852174^2 + 695644^2 .

It is a super-2 number, since 2×1210121101012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210121100983 and 1210121101001.

It is a congruent 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, 98409687 + ... + 98421982.

It is an arithmetic number, because the mean of its divisors is an integer number (93002964075).

Almost surely, 2^{1210121101012} is an apocalyptic number.

It is an amenable number.

1210121101012 is a deficient number, since it is larger than the sum of its proper divisors (1021950036788).

1210121101012 is a wasteful number, since it uses less digits than its factorization.

1210121101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196831755 (or 196831753 counting only the distinct ones).

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

Adding to 1210121101012 its reverse (2101011210121), we get a palindrome (3311132311133).

The spelling of 1210121101012 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, one hundred one thousand, twelve".